How to sand particles out of my image sensor?

I was at my local beach club today and I changed the lens on my Nikon D3100 in what I thought was a very clean area. I looked at the sky after I put the lens on to see if there were any particles. I noticed 3 tiny specks of sand in my view finder towards the edges. I completely flipped out, and I'm still worried because I got the camera last month and really don't know what to do. Should I get a dust blower or bring my camera in to get it cleaned by Best Buy/B&H?

Added (1). EXCUSE YOU HONDO AND YOUR STUPID REMARK! I'm sure I know much more about cameras than you ever will. I didn't ask for snotty remarks.

And I took off the lens and turned the camera to the light and still saw the sand particles. I also changed the lenses again today to see if the sand was only in the lens I had on and noticed it was still there even after I had my other lens on.

Added (2). I'm sorry for calling you out Hondo. The way you worded your answer made me feel like you were mocking me instead of trying to help. I guess you were right about the sensor thing.

Get it cleaned by B&H, no worries, they will fix it easily.

First of all, take a deep breath - dust bunnies are a fact of life with a DSLR.

Secondly, it may not even be on your sensor. What you see, could be spots on your lens, or the filter, or inside the view finder, or on the mirror.

Either get it cleaned professionally, or start learning about how to do it yourself.

Here is a great resource for you: http://www.copperhillimages.com/index.php?pr=tutorials

Screw Best Buy because they are totally clueless about Cameras. Definitely go with B&H Photo mainly because they have the knowledge on how to clean the Cameras to begin with.

You apparently do not understand how your camera works. If you can see the specks in your viewfinder, then they can't be on the image sensor. I would still have it cleaned.

Sorry, but you quite obviously do not know more about SLR and DSLR cameras than I do. If you knew even the basics of how they work, you would know that when you are looking through the viewfinder, no matter if the lens is on or not, you are seeing light bounced off the mirror that is in front of the shutter, which is in turn covering the image sensor. YOU Can't see through the viewfinder while the sensor is exposed with your camera! Anything you see through the viewfinder can obviously not be on the sensor. It is very obvious that the spots are on the focusing screen, which is located between the mirror and the viewfinder. Any spots on the focusing screen will be seen in the viewfinder.

I think it's about time that you buy a basic book about the internal workings of SLR type cameras so you don't sound so ignorant in the future.

After you finish bashing Hondo, listen to common sense. As someone who sold cameras, taught camera classes and has shot professionally for years, I have to say that he is correct.

Anything you see in the viewfinder is NOT on the sensor. If you see something like dust or sand, then it's either on the lens or the mirror. Frankly, you could paint your sensor with black paint (don't do this) and you'd still be able to see your subject through the viewfinder.

Now, after we all take a breath or two - All you need to do is use a blower, as you suggested. Never, never touch the mirror as it can be scratched very easily. If you're not comfortable with that, almost any camera shop (not Walmart or Best Buy) will do it for a very low price or even for free. I keep a blower in my camera bag at all times, and have learned a couple of tips.

One, when you change lenses, have the camera body aimed downward, so dust & grit doesn't fall into it.
Two, with practice, you can dismount one lens and mount a second one within seconds.
Three, always keep the back element of your lenses clean and cap them tightly when putting them in your bag. Otherwise, any dust that gets on the back of the lens can easily get introduced into the camera body.

Finally, don't bash those who offer good advice. I've never met Hondo, but he's always come from a position of knowledge and experience. His answers have always been based on experience. Seriously, I wouldn't challenge his camera knowledge.

You mean to say, you change lenses with the reflex mirror up? Wow!

There are five dSLRs in my house and I have been shooting with them for quite a number of years now. I have to admit, I still haven't seen a single digital sensor from any of those dSLRs yet in person with my own eyes. Why? Well, aside from the fact that I point my camera down when changing lenses…