If your uncomfortable with filing your taxes yourself and have a pretty straight forward return, go to your local VITA site. VITA is a govt. program that offers you free tax services. I graduated with a BBA in Accounting from Temple University...this was part of our curriculum; I can say with CONFIDENCE this is a GREAT program. You don't pay one nickel.
Filing yourself...
If you don't want to purchase software you can file via the Turbo Tax site. If you don't have any deductible expenses such as mortg interest, child care expenses, donation etc. it's best to use their simpe return from. Please note, when using the Turbo Tax site, only the Federal return is free. Under the law. your still required to file a state. The Turbo Tax site will charge you a fee to file your state return.
You might make out better by purchasing the Federal Deluxe version, you're giving the same benefits, but 1 fee state return (must mail; e-file's addtl $20).
Good Luck!