I did it, it asked me to upload an OS firmware, and I chose the latest from microchip's website.
Application version 2.40.00
Device File version 1.41.00
OS Firmware Version 2.10.00
PicKit2 2.40 shows a message stating that everything is OK, and PicKit2 is detected. But if I open MPLAB 8.00, PicKit2 is disabled in programmer and debugger menus....
Now I use "Use VPP Frist Programming Entry" under PicKit2 2.40 and it works fine with 12F629. This is solved, but MPLAB 8.00 does not detect it. I tried plugging PicKit2 before opening MPLAB, and also while it is open...