Replacing iPad with iPad2 Registration

I orginally had an iPad which was registered on my desktop. Recently, I gave my iPad to my son (which he created a new account with iTunes) and replaced it with an iPad2 issued by my university.

Although it synchronized when first was connected, it will not recognize my original password. I tried to change the password with no luck. What do I need to do to register iPad2 and change password. Do I have to create a new account? Your expertise is appreciated.

P.S. I checked the iTunes website with no luck.

Thanks,

CJ

no new account needed, just do it all from pc and then sync again.
sign out on ipad2, in settings.

wasn't too sure on your question...btw.