Jerr, if you want to make kits I would recomend that you check out some of the weidu tutorials over at:
fwstudios -
www.fwstudios.net
forgotten wars -
www.forgottenwars.net
Very good tutorials.
There are usefull hints on the teambg tutorial page.
www.teambg.net
If you need specific help making something pm me and i'll see what I can do, but it has been a while.