I really like that one!
I tried to convert it to a vector for you, but the attached version is too low of a resolution. (I don't have Photoshop so I can't open the psd file).
If you have a higher resolution version, you can always upload it here: http://vectormagic.com/home
(You will need to sign-up for an acct on there, but you get 2 free conversions.)
Also, I'm truly sorry that I didn't get around to helping you out earlier.