Hi, I upgraded to Adobe Reader 7.0 yesterday after the little message thing came up. And, well now it has corrupted pretty much every programme on my computer, and everything wants to open with Adobe Reader(even though it says thats a damaged file!) I am on a spare computer now as Netscape and Firefox are also corrupted on the PC. Does anyone have any idea what I can do? I can't go to Add/Remove programme, because that too tries to open with adobe reader! Any ideas anyone? Much appreciated!

You might try a System Restore to a point prior to your problem:

start > All Programs > Accessories > System Tools > System Restore