I just finished uploading a few videos on how to disassemle the slide on the P99. I uploaded them to YouTube, so it would be easier to view them with a high speed connection.
Video 1: Complete Slide Disassembly
http://www.youtube.com/watch?v=0R8c8itm_oU
Video 2: Striker Disassembly
http://www.youtube.com/watch?v=riQTTdghMyM
Video 3: Sight & Night Sight Installation
http://www.youtube.com/watch?v=G1RmXwetyYU
I hope this help.
Video 1: Complete Slide Disassembly
http://www.youtube.com/watch?v=0R8c8itm_oU
Video 2: Striker Disassembly
http://www.youtube.com/watch?v=riQTTdghMyM
Video 3: Sight & Night Sight Installation
http://www.youtube.com/watch?v=G1RmXwetyYU
I hope this help.