once i set my nameservers w/ my registrar, wat else do i have to do to pointit to my site? (obviously hosted here)

You have to wait 48 hours for it to propogate. But that's all.

so i set teh ns3.jb-hoster.com and teh other one at my registrar and jsut gotta wait for it to point to my site? ok, thanks

Yeah, that's all.

well thats nice and easy

Is it possible to run multiple (sub-) domains on one account? It's a bit hard for me to fill 800 megs and 10 Gb a month with just my personal site, and I have a few projects which also have web sites. I can use URL forwarding on my domain hoster but that prohibits me to run any sub-domains. I think you'll have to modify your vhost configuration to get it working right?

Yea, you can create as many subdomains as you like

ok, i set my name servers a long time ago. also, wen i looked up teh servers, they had problems. also, i think this might be that my cPanel doesnt know how much stuff i have, like space, domains, anything. where could i get support OTHER THAN TEH TICKET SYSTEM?

If i'm going to have 2 seperate website on one account and i have 2 domain how can I point each domain to each account?

Use them as addon domains. If I'm not wrong, then one domain will point to a directory, but only you will notice that. The domain will be just the same for all internet users.