Need help rigging character

[Fiasst]

Heya,

Ive modeled a character in 3dsMax. Hes a simple fellow but im having trouble with his arms.

ive modeled him in the cruserfix position with his arms up and thumbs pointing towards the sky. But now ive added the bones and done the enverloping i cant seem to put his arms down by his sides without alot of twisted joints :\

the only thing i can think of is saving 2 versions of my character, 1 with arms up and one with arms by his side in a casual position. But if i ever want to animate him i cant make him go from arms up to arms down in 1 movement.

Has anyone got advice about rotating sholder, elbow and wrist bones without making them look stretched and twisted!?