That's always a sticky wicket, though, especially if the party doesn't share experience. You might adventure with someone for a while and seek to use another companion for a quest, only to find that the second companion is painfully under leveled.
I don't suppose anyone here knows the hex codes for activating the Gamecrazy/Gamestop preorders on the PC disc?
I can see the value is "02" but I can't alter that without it crashing, and maybe someone's done the work for me. Shoot me an e-mail if you've got the answer.