Could be just a belt, get out your owners book. I think it tells how to change in there. The back comes off the dryer very easy.
Theres not much to a dryer and they are pretty easy for most handy folks to fix.
Karen L

It could be lint buildup. Check your lint filter and your pipes. What does it smell like? Lint, wiring, and burning belt actually all have a different smell.
To change the belt the top and front actually comes off on newer dryers.

Clean up the dryer exhaust, I think this should be done every year or two.
Can you afford $60.00 for a service call ?? I cannot, for certain.
so, break open the unit, its rather easy, and check it out. lets us know what happens..
the earthworm

Check with repairclinic.com. You may be able to find some info there. You can also email them with questions and a real person will answer your email.

Here is a link that might be useful: RepairClinic's link to trouble shooting your dryer.

Thanks all for the advice. Winter is here and DH needs to deal with the issue. xminion