itunes install error in Vista

I (sadly) have Windows Vista Home Premium 64 and no matter what I try, I cannot install iTunes (9, 10, OR 11) successfully. I get an error that is very non-descript, stating my installation could not be completed. Period. No error number, nothing. Screenshot for your pleasure:

I have disabled my Norton Anti-Virus and "Smart Firewall" for the install, but that doesn't matter. And I tried re-installing. Same results.

Is there a way to view and shop at iTunes via my browser (IE8) without installing itunes program?

I thoroughly hate my operating system, and I only need to get onto iTunes to download the songs I want from the American show "The Voice".

It's very sad that there are people who cannot use their social media to vote for the contestants because iTunes and Vista64 aren't friendly.

Ok, aside from my rant, does anyone have direct links or help I can try?

Thanks!