What setting should i weld it?
I am gonna go to HomeDepot and rent a welder... going to be first time welding.
Can someone gimme like, how much amp to set to etc.? It's gonna be a MIG i think.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Can someone gimme like, how much amp to set to etc.?</TD></TR></TABLE>
Enough to have good penetration, little enough not to burn holes. I cant say as alot of welders vary a bit. I dont know if I'd go and weld on my car if I didnt have any previous welding experience, chances are your end result will be something.

Pics for the end result.

 

before you weld on the car get some scrap peices of metal that are the same material as your radiator support. this way you can become used to the metal and know how it needs to be welded. but if it is one of your first time i dont suggest welding it yourself