downloaded, now what?

[holldoll]

Okay, sorry, probably a lame question. I downloaded the ilauncher, for the icons, I think and also the Vista phonepad and I can't figure out what to do with them now to make them work. I've already extracted them on the phone.

After I've extracted the programs to I need to leave everything on the phone or can I delete some of the files to save room?

Help! Thanks!