Windows 7 - What version am I running?

I need some help identifiying my windows 7 version. I switched over from XP and I have to say Im not going back. I am currently deployed to Iraq (mother country of piracy) and got my hands on a Windows 7 copy. My computer shuts down without warning every so often. I dont know if it is because im running the Beta Version. Honestly I am not sure if it is the Beta or the RC. Please if anyone out there knows how to figure this out i would aoreciate the help. one thing for sure is that I can imput a key i recieved yesterday from MS windows live. Also upon startup the logo says Windos 7 Ultimate.
Thanks for the help

You will have the BETA then, that's a feature programmed in. It will shut down every 2 hours as of June 15th... I think. All BETA and RC versions will be a fully featured Ultimate compilation, for testing purposes only.

type winver in search and it will tell you if it says 7000 its a beta

KEn

I would like to take the time to thank you for your service to our country.

What you do there, . . . . makes what we do here possible.

Thank you

Scott

But you don't need to pirate! - you can still get The Release Candidate (RC 7100) direct from Microsoft - and a key. It'll run about a year LEGALLY.

The Beta is stuffed - it will shut down completely soon.

Hit the scales if I've helped

Thank you all, typing winver worked great. turns out i have build 6956. it will take days for thr RC to download. again thanks