Here's a little batch file utility to get your installed programs from your Windows 7 registry. This was adapted from an online script that doesn't work on Win 7:
C:\Windows\System32\reg export HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall temp1.txt
This needs to be all on one line in the batch file, with a space between export and HKEY... my editor broke it into two lines.