Try Hammer curls, they specifically willl target the forearms, other than that, reverse curls do a good number on them, and there are a variety of ways of doing them. Check out www.fitsite.com and www.exrx.net for demos and a list of exercises for each body part.

Too much protein would be a daunting task. To put things in perspective, I eat 180g of protein regularly, and that's 'just right' for me. What are your husband's stats? I've seen some weight lifters consuming 400g of protein and not thinking twice about it. When you say "it doesn't seem enough" do you mean quantity wise or food wise? Is he hungry?

Nope, just 'Do it" to steal a coined phrase You want to stretch those muscles out. Check out the general exercise forum, there were a few great polls on stretching and working out last month.

HTH
Nat