Personally, I almost never respond to messges that use the word "toned". Toned is such a b.s. word. You either work and stress your muscles or they're flab.
Anywho--
if you want to tighten up your inner thighs and squatting isn't what you want, try sitting on the floor, with your legs straight out in front of you one on either side of a stationary object (chair, trash can, etc.) Squeeze, relax, repeat a couple of zillion times. Or buy a Swiss ball by mail and use it for lots of stuff.
I think by inner arms, you mean inner tris--. Use heavy cans and lift them up over your head with a straight arm. Lower and repeat.
Go to the library and look from some Joyce Vedra (sp?) and some Callenetics books--the latter are pretty good isometric/ballet moves and will work, if you do them reguarly.
Also, anyone who's all worried about getting bulky might be happier looking at the about.com exercise site. They go for light weights,. high reps there.