I have two questions i need help with if anyone could please give me some advice, thanks in advance.

1.) How do i set up a WHM and a Cpanel Demo on my website?

2.)How can i allow peeps to login to WHM via my site(resellers).

thanx

try taking it to the hosting software and control panel forum or whatever

Don't do it - it's a very bad idea securitywise. For demos you can direct them to this site:
http://www.cpanel.net/