Mail() header

[Snake]

I am new customer of hostgator, i am having a simple forum that runs on php, which i just placed in your hosting. But having few problems, as when a member gets an activation key throught mail. In the header its showing the hostgator name like "@gator500" some thing, i want to change it to "admin@myforumname.com" how can i change it, as its making confusion to my forum members. Pls help me out.

[striddy]

I'm sure other forum members will try and help you, but you need to supply more information. For example what forum software are you talking about.