Windows Vista home basic 32 bit iso

I have a very old hp Compaq laptop with original windows. I wanted to format it but its recovery portion has gone kaput due to virus. And the recovery cds have water damage i guess.

So i thought that I'll get the drivers from their site and download windows vista iso. Looks like windows 7 can be downloaded but i couldn't find for vista. Digital river i guess.

So I'm asking where could i get hold of virus free windows vista home basic 32 bit iso. I have the original key