Mouse, thanks kindly for the reply. See the note I gave to Tony. BTW Tony, I checked on that link and it says that only Photoshop version 13 supports this lens.
The problem is, I shot the pics and edited them in C1Pro 7 as I needed to use the LCC function to properly capture the photos and that software doesn't have the correction profile for this lens, so I wanted to do the correction on a PSD file in my version of CS5.
Thanks for the help, it's much appreciated!