I simply love this site: http://www.allbootdisks.com/
I've been looking for Boot Disks on and off in the past from google, and always got into some sites which ask for $$ for boot disk images and such. But today, I've got my luck, googled on "win98 iso boot disk" and I've instantly got this very nice site.
Why Win98 boot disk? oh.. I was helping my friend to get Win98 installed on his Virtual PC, but, apparently the Win98 CD that I have doesn't boot. And from experience in the past, I can only get some floppy image which I don't think there's any luck of it running on VPC, so I start looking for ISOs instead and voila, today is a good day. :-D