I downloaded mandrakes iso files attempting to update my mandrake 9.2 and need the info to make an iso work....

It is so old distro.

What have done upto now? Where are you stuck?

Offhand, I think I would mount the iso locally, something like...

Then use urpmi with necessary options to install or update selected packages from the iso.

I used to use urpmi (loved Mandrake!) but it has bee too long to remember, so see man urpmi.

I would NOT try a system-wide update. If you need to bring everything up to the iso version at once, I would backup my /home and /etc directories (probably others), burn the ISO to CD/DVD then reinstall from the disc. After install DO NOT simply copy the /etc back over the new one, but use it for a reference to configure the new install.

Unless you have specific hardware or software that will only work with a 12 year old linux distro, just for security and usability reasons, you would be better off imo backing up your data and installing a more recent linux distro.
I was a mandrake user during that time and i dont recall that it was all that great. IIRC i got fed up with it and installed gentoo.
If you install something more recent you would at least be more likely to get help with whatever configuration or installation issues arise.
If you are looking for something "user friendly" you could always go with something like ubuntu or mint.