|If I were you, I would advise against installing demo game or software on your computer. You can if you want, but I am paranoid about stability and demos aren't known to be the most stable things. Also, I don't think there is a unified installer in Windows (yes there are .exe's but the methods in them) so you will have installers and uninstallers that do different things. Some may do clean installs and uninstalls but some may not. Even worse, some programs may take shared libraries away with them on an uninstall. |
My policy on demos (and other software I am not sure about) is to have Windows XP setup with all the programs I want and the settings I want, clone the partition to a backup image and then try beta software/software demos. If I don't like them or they screw something up/bloat the system I can fiddle around with some more stuff for awhile or just use my PC until I am about to go to sleep. At that time I will start the restore operation. When I wake up in the morning my operating system is back the way it was, except for some possible application settings or data files, which would be backed up before a restore.
I don't get very many viruses (I use linux quite a bit but I also use Windows XP a pretty decent amount) but cloning, in my opinion, is one of the best ways to keep your PC stable and to keep it malware/spyware/virus/trojan free. I have all the main programs I want installed and have batch scripts to back up their settings and data on a regular basis so a restore won't set me back a few months.
If you don't think the demo has a time limit or some type of limit you might try booting into safe mode and seeing if you can do anything there. I know I had an issue where it said a file I wanted to delete was in use and it definitely wasn't. Booted into safe mode and deleted fine.
If you are interested in doing so I can instruct you how to do so, just send me a message. Be warned though, if you try it with Vista it may keep you from upgrading to service pack 2 (you will probably have to use the repair install option on the installer DVD anyway to get it to boot again).