Hi and welcome to the site (glad you finally registered

).
A few things to try to determine what type of player you have and therefore what video types it can play:
- Within your player's main menu, go to "Setup" and look for something like "firmware version" or "firmware info" and post the information here. That will help us determine what type of chipset you have on your player. The video formats your player can play is determined by the chipset it runs
- Secondly, do you have a SAMPLE video file that came with your player? If you do, can you upload it to this site or post information about it here? This will also help.
Look forward to hearing from you.