What is the easiest way to find out the version number of the programs installed on my computer. I use FileHippo to get most updates but not all my programs are listed. InstallShield hasn't updated anything since 2008 and only has 3 programs that it checks for. Should I just uninstall it and what is the best way so that I can also delete any registry keys associated with it? Thanks for any and all help.

Try Secunia's 'Personnal Software Inspector', which tells you the versions of installed software and which ones are out of date. Just beware that it configures to run at start up by default ... you can turn that off.