Vivitar auto thyristor 5600 on a nikon D90?

My dad used to do a lot of photography and he found one of his old flashes that's a Vivitar auto thyristor 5600 and I have a Nikon D90 and i was wondering if that could work on my camera?

Thing that holds my battery into my camera is lost- what do i do?

I have a nikon D3000, the little thing that holds the battery in fell off and is lost. I've been using cardboard and tape, but thats not working out great. I don't know what that piece is called- where can I get a new one? Or is there any better ways to make that work?

DSLR flashes and lenses?

I want to get a zoom lense for my Nikon D40 only for better quality photos. I also would like to get an extra flash but I don't know all the points of having an extra flash.

Can you fix a dslr lens that makes noise (sound) when you zoom?

Just to clarify by noise I mean loudness, like a scratching or friction sound. I've been looking at slr cameras for a while, and I definitely want one that shoots video. However the majority of cameras I find make noise when zooming(and i think manually focusing) that gets picked up by the internal mic(kit lens). Can you use something to make it smoother and quieter? WD-40 for example? The cameras I've found with this problem are the Canon t1i and T2i, and the Nikon d3100 and d90 i believe does too. The only one I've found that doesn't so far is the Pentax K-x. These are some examples of what I mean:
http://vimeo.com/...m/15573306 (I know autofocus is making the louder noise)

Nikon D40 camera problem

My camera has not been turning on for the last couple of days. This is happening even after I've charged the battery throughout the night. It's been working find & out of nowhere it's stopped. What should I do/try to make it turn on?

Canon Rebel XS vs Nikon d3000 LENS?

I want a to get an slr, it's between these too right now. But i heard something about lens compatibility or something about there being a difference. XS has more compatible lens or i don't remember. Can anyone tell me?

Review for the new Nikon D7000?

I'm considering purchasing the new Nikon D7000. This is a new Nikon SLR. Has anyone purchased this SLR? Please write a review here.

Where can I find a cheap SLR Camera?

I need a new camera next year for college. A SLR to be precise, but the one I would like is quite expensive(£500).It's a Nikon D3100, and so I want to be able to get it before September next year. If you know of any good, suitable places online that will NOT scam me, then please could you direct me to the site?

What is fEE when this shows in my camera?

I have an AF 50mm f/1.8 lens D for my Nikon D90.every time i change to f/4 or f/1.8 this fEE shows.
Does this means it only works in f22 and in M mode? Any advice greatly appreciated.

Cameras as Carry-ons?

I'm going to Florida this January and as a huge plane fanatic I was planning on bringing my Camera (Nikon D50 dSLR) onto the plane with me and I was wondering if this is still allowed, also I was wondering what's the deal with those X-Ray machines (forgive me if they don't use these, I've only flown once and that was like when I was 8), is it safe to put your camera through whatever security scanning devices they use? If anything bad happens to my camera can I sue?