ive only done xeniums so dont shoot me
do i need to rebuild the LPC? and if so where is a tut located for it?
do i need to have the extra ground wire connected?
and is there anything else i should know?
im gunna attempt to flash it without buggin you all, but who knows, i may be back to ask about that
thanx guys

No and No.

No LPC rebuild on a 1.5, that's only done on a 1.6.

Here's everything you need;

http://www.teamxecuter.com/x3/tutorials/x3pin1015.htm