Testing for Deployment

I'm pritty close to finishing my 1st app, just got some small touches to do and its done :)
Just checking to see the best way to test it, and if i've missed anything out for deployment

-I've packaged the software with the NSIS installer which works well
-I've protected the software with Intellilock which carries out the Assembly Protection and licensing
I've tested my app on my PC(Vista 32Bit) and also used Oracle Virtual Machine with XP & Vista O/S's (both 32bit) and my apps installs and runs without any issues

From what i can see all i need to do is test it on Windows 7 32bit and also Xp,Vista,Windows 7 64 bit versions using the virtual machine?

Does that sound about right or is there something else i've overlooked or any tools that are helpful for testing?