Can you use DSLR lenses on compact system cameras?

I know nothing about DSLR cameras vs compact system cameras! I really want to upgrade from my point and shoot Sony to the Olympus Pen E-PL1 Camera. Now I'm aware that the lens on this camera is not good for zoom shots. Could I use a Nikon lens taken from a friend's DSLR camera?

Let me know a digital camera of price ranging from 10000 to 15000 INR

I've options like SONY CYBERSHOT, CANON and NIKON! I
don't want SLR or DSLR because i havn't done any photography course and i've been told that without having a course i may not be using SLR or DSLR properly! So guyzzz help me out and thankzzz in advance!

What is your opinion on these two nikon 35mm film cameras?

Nikon N60
Nikon Em
and what do you think is a reasonable price to buy these two cameras?

I'm a beginner at photography

Cameras with film and digital.do they exist?

I'm taking a flm photography class and some of the stuff we do is digital. Are there any cameras that are made for film and digital? Hopefully new and in the Nikon or Canon range? If not, what is the best digital camera ever! (BTW, my budget is 700-800 dollars)

What does AF mean on a Camera Lens?

I'm going to buy a Nikon Lens, But it says that the AF appears to be broken! What does that mean? And is it possible to still use the lens? Don't know much about lenses, I just want to buy a lens that will have a better zoom. So if someone can help me out, that will be great!

I'm wanting a SLR, what brand Nikon or Canon?

I'm a teenage photographer. I don't want it to be over $600. I love light graffiti, macro shots, and i really love sports photography. Can you link me to some cameras if any ideas?

Added (1). Nevermind the $600… I could go over that.

Looking for a camera with good optical zoom and good picture clarity?

I'm looking for a camera with good optical zoom and good picture clarity within Rs.15000… What is the least price of the Nikon digital cameras? Any suggestions would be helpful… Is there good customer support cos I've heard that they're real value for money?

How much would I get for an old 90's Nikon SLR?

It's in awesome condition, and has a bunch of lenses… It was my grandpas who passed away years ago, looking to use the money I get for it to go towards a Sony NEX-5. Should I sell it? Or would it not be worth it?

What professional camera can i buy?

I want to start a hobby of photograph so i need a professional or semi-professional camera, i need it 16 mega pix ( no need for more and don't want less ) with HD movie ( really important since i have AV class) and the ability to focus on really small objects… I need it to be less than 1000$ since i'm paying for it ( i'm a teenager) and of course flash, stabilizer and the basics… Which camera do you think is best? I have 2 brands in mind canon and nikon but which one of there 100000000000 cameras is the one for me?

What are the best compact digital point and shoot camera's?

I'm looking for a nice CHEAP digital compact camera.a point and shoot one.preferably a canon, lumix, nikon or sony camera.right now i find the canon powershot A2200 nice, but i don't find it too good.anywayz, please add a reason for your answer, thanks.