i-fighting FTA21 Mp4 player need help editing.

[Marinenco]

The Mp4 player image is shown below, I got this MP4 player for Xmas and It looks just like the one below in the picture Exept mines has a Camera on the back, 16GB and a different theme. I was wondering if its possible to edit this and what type of MP4 player i have the info for this one below is:

Specifications

• Main functions: PMP with touch screen display for playing music and videos
• Additional functions: Digital camera and videocamera, FM radio receiver, picture viewer
• Internal Memory: 16GB
• Optional External Memory: Mini-SD Card (4GB Max)
• Display:
  - Screen Size: 2.7" True Color TFT LCD
  - Resolution: 320x240
• Video Format: MPEG (AVI)
• Music Format: MP3, WMA, WAV
• Picture Format: JPEG, GIF, BMP
• E-Book Format: TXT, LRC
• FM Radio: 87.9~107.9MHz
• Built in MIC Recording Format: WAV
• Languages: English, French, German, Italian, Spanish, Dutch, Portuguese, Chinese (traditional), Chinese (simplified), Russian, Thai, Arabic
• USB: High Speed 2.0
• System: Windows 98SE / ME / 2000 / XP / Vista
• Power Source: Built-in Rechargeable Li-ion Battery
• Dimension: 95mm x 55mm x 15mm (L x W x H)
• Manufacturer Ref.: LLPRIJL9Z2GS
• Alternate Model Number: D1900-16GB

So is there a way i can Edit it ? and what do i need to do that ? i want to change the theme and add a background/screensaver picture of my GF if thats possible >.< ??