@dentaku: http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_programs/multiple-microsoft-visual-c-redistributable/0608a19a-38a8-4885-9eb4-128a2bfad0a3

You could uninstall one that you know isn't used for anything except for the software you've uninstalled.  Just make sure you have the install for the software you have installed in case your wrong.

2 isn't so bad