This is the most user friendly wallet I have found so far and I made a tutorial on it in case anyone else needs to convert their presale ethers into bitcoin:

http://prisonorfreedom.com/how-to-convert-ethereum-ipo-presale-ethers-into-u-s-dollars-euros-or-bitcoins/

If any of you techies spot any glaring mistakes in the tutorial, please let me know. Thanks!

Enjoy!
Tai Zen