Can't upgrade from 3.316 to 317

[JoeyDVDZ]

Hi all,
I downloaded the update from 3.316 to 317 of Hoster Lite. I tried to upgrade, had my internet connection, using Windows Vista Basic, and at the field where you need to enter your information, the space for computer name doesn't have the ability to enter any information. There's no place there to type anything in. Further, I somehow hosed my 3.316 installation, and now can't get it to work. It claims it's being installed on the wrong PC. Man, I really boned myself here. Any suggestions? Thanks.