Before I get into my question, my apologies if there is a better place to put this. I have been reading over the forums and posts but didn't see a good spot. Plus I am so not a forums girl! Can't even figure out how to find what I searched for! So without further ado, here is my question:

Which is the better bike to use for my commute and to add on to or upgrade? I have two bikes, one is a 1993 or 1994 Raleigh M50 and the other, a 2007 Trek 3700. Both bikes were purchased brand new and neither has been ridden more than 10 times and pretty much just stored in the basement. Pretty pathetic, I know. So I have moved closer to work and want to ride in--tired of working out at the gym...need something else! It's about 10 miles each way, no dedicated bike paths, street riding only. The Raleigh is a bit heavier than the Trek, not sure how much that will play a part in my ease in commuting. The Trek has the front suspension. I was thinking that the Trek, being a) newer and b) lighter would make it the better choice, but I have read somewhere that front suspension is not good for a commuting bike. Along with commuting this bike is going to help me go car-free (or at least car-light!), so I want racks on both the front and back. Can you put a rack on the front if it has suspension?

I am taking my Trek in for a tune up today and will ask the guys at the bike shop as well, but they may not be commuters and because of that, I am posting this here to get advice from experienced commuters. Thanks everyone!