No, it is not available for download.
If it came with the computer (OEM version) you need to contact the whoever
you purchased the computer from or the computer manufacturer.
If it was a retail version then you can try Microsoft at 1 800 426 9400

Signature
Jon Hildrum
DTS MVP
Jon_Hildrum@msn.com
www.hildrum.com
> my windows 98 disk is damaged and I had to do a full
> recovery and now I can not load windows back onto to my
> computer. Can i download the version from the microsoft
> site, and use my certificate of authenticity number, and
> get the exact same thing for free. If so how