Hi jmebonner.
There are plenty of resources online. I've been updating my résumé for 2 years now...
First off, spell "résumé" correctly. People will be impressed.

See those little marks over the "e's"? You make those by hitting ALT + 130.
Read on the job boards; many have a ton of great tips and how-to's for résumé writing, interviewing tips, etc. Some even have samples that you can copy from.
Visit these (and seek out others) job sites and poke around for their resources and job tools areas.
www.dice.com http://www.hotjobs.com/htdocs/tools/resumes/index.html www.monster.com www.careerbuilder.com www.jobsummit.com www.collegerecruiter.com
Others:
http://www.interviewcoach.com/workbook.html
If you have a friend who has recently gotten a great job, ask to see his résumé to compare.
Your résumé can be considered worthless if spelling and grammar are not perfect. Double and triple check it and ask a fresh pair of eyes to read it if you have someone handy. Read it out loud to yourself.
If I can think of anything else, I'll come back. In the meanwhile, Good Luck!
Check out
Brainbench.com for the IT stuff.
Finally, google.com it. You'll get info on the subject for days....