If you use something like turbotax and do your taxes online, you don't even have to worry about which form is the right form. It will be filled out automatically. I heartily recommend this method of doing your taxes. The more complicated (like having a 1099-MISC) your return, the better deal it is to use this.
This was my 3d year using an online tax preparation and I have definitely enjoyed the results.
http://www.turbotax.com is the site I use.
http://www.irs.gov has more acceptable "partners" to use to prepare your return. Check it out. It really is easier, faster, and more accurate.