psp2ptfconv Converting rco to ptf

I have the psp2ptfconv software used to convert rco's to ptf's, I was just wondering if anyone knows alot about this. Ive been playing around with it and rco edit trying to make themes. What I have been trying to do is take an RCO theme pack and convert it to ptf format to use in 3.71M33. I have successfully converted the rco files to ptf but I cant figure out how to compress them into one .ptf file like the 3.71M33 themes are. As far as I have gotten is putting just the topmenu_icon.rco file that I converted to topmenu_icon.ptf in the ms0:\psp\theme folder. It will show up on the xmb under themes but it says its corrupted data and wont let me load. The main reason Ive been tryin to do this that ive found some cool themes that are rco format and I would like to be able to use them with the 3.71M33 themes option on the xmb, instead of having to flash. Just been messin around with it so far, and wonderin if anyone else out there has any insight or advice. Oh yeah, and I was wondering if anyone knows exactly what files are in a 3.71M33 ptf theme pack file, such as topmenu_icon, topmenu_plugin, etc.

THANKS IN ADVANCE FOR ANY HELP!!!!!

AWOLHALL a.k.a Longwinded poster