Run two WOWs on different computer

[MiRai]

I have expected any kind of GUIDES, links to them or something

Guides are normally written and maintained by members of the community, and multi-computer setups are becoming increasingly rare now that hardware is more than powerful enough to run multiple copies of the game on a single machine. With that said, I also find it odd that your computer can't handle running two copies of the game on a single machine, but then again, you haven't stated what hardware you're trying to use.

So, once you figure everything out, feel free to write a guide for others to use, since people tend to show up, get their information, and depart, which then leaves others, like yourself, wondering how something works.