How do you turn off Office 2007?

Short story:

XP machine died. Transfering to Vista computer.

Was using Office 97. Installed it & got it running but not much else ran so I attempted to remove it... Finally I had to go to a prior restore point.

An Office 2007 trial version came on the computer but currently I don't have the cash to get a license, so I downloaded & installed OpenOffice.

Now, WinPatrol keeps popping up every 10 minutes or so telling me Office 2007 has made changes in file associations and asking if it's OK. I keep telling it no, but every 10 minutes....

I looked and there are folders for both Office (97) and Office12 (2007) on my hard drive.

Q1: Best way to remove Office 97 ? (since it won't work anyway)
Q2: How do I get Office 2007 to STOP doing this ? (especially since my wife & teens will also be using this computer and I just KNOW they'll either click the wrong answer OR ignor it and when they shut down the computer the change will remain, causing "issues" for them later...)