Q: OS X Lion keeps zooming in and out , cursor not controllable

Hello Realm313,

Thanks for using Apple Support Communities.

I understand that your trackpad is not responsive and you're seeing odd screen behavior.  First things first, I'd like you to follow the tips and cleaning instructions in this article:

Portables and Magic Trackpad: Jumpy or erratic trackpad operation

http://support.apple.com/kb/TS1449

If you are still having issues after following the above article, please reset the SMC and NVRAM on your computer:

Intel-based Macs: Resetting the System Management Controller (SMC)

http://support.apple.com/kb/ht3964

About NVRAM and PRAM

http://support.apple.com/kb/HT1379

Take care,

Alex H.