Molly, Do you have an oven in your dorm (assuming you live in a dorm)? Ours had one in the basement. I didn't use it often but that would be an option. I actually used to cook chicken and other food at my boyfriend's apartment, store it in a container in my dorm room refrigerator and microwave it to heat it back up. That's an option if you have friends that live off campus.
Maybe you could consider a toaster oven? I've never used one but some people swear by them. I don't know how well it works with proteins though.
The micro cooker is a good idea as well. I know Tupperware makes one (as pp said) - so does Pampered Chef. I've even seen them at Wal-Mart.
You can always go with frozen dinners, as Suzanne said, but I know they're kind of expensive. Do you have a campus meal card? How about getting an extra portion at dinner and putting it in the refrigerator till the next day?
Just some ideas... I'm not too far removed from this lifestyle.
Good luck!
Jocelyn