Help with Motorola Phone Tools and RAZR V3

I'm not sure if I need to be posting this here or in the T-mobile folder honestly. My husband and I are with AT&T/Cingular. We both have RAZR V3, and use MPT for ringtones and such. My darling husband, in all his wisdom decided to sync my friend's V3 to the computer as well, so she could use MPT, not problem right? Well she's with T-mobile, which might as well be a freaking virus as far as I am concerned. Now every time I open Firefox, I get this silly pop up box "Connect T-Mobile". I can't make it go away. I deleted her profile from MPT. I did a scan of the computer for anything with "T-mobile" in the file name. I can't make this thing GO AWAY. It seems as if it's trying to use her phone as a modem every time I try and open an internet connection. I can't make the thing go away.

Any suggestions?

Are the options in Firefox still set to your old home page? Also try clearing the cache in Firefox.

It's not my homepage...it's a separate popup window, like an application. Whenever I try to open a web browser.

Have you tried running Ad-Aware or Spybot Search&Destroy?