White scxreen/ vertical coloured bands on startup - 15" Macbook pro

Hi!
On startup, a white startup screen with vertical coloured bands. Directly after this screen, I get a message (with the bands) saying I need to Restart in 4 languages. But pressing and holding the start button does not restart so I just shut down.
Just to be clear, I am listing various points that I think might have contributed (but I don't know what's happened or how to fix this)-
1.About a week back, when I picked up my MBP, I heard a rattle like something loose inside the notebook.
2.Just before this, once when I woke from sleep, the entire screen was filled with coloured dots - thisa went away when I restarted.
3.Last eve, at startup, the screen with bands appeared and wouldn't go beyond the 'Please restart' msg I referred to abv.
4.When I inspected the back of my MBP (the side on which the battery is), I noticed one of the little screws missing from the side closest to the hinge of the notebook.
5.I could still hear the rattler from side to side when I moved my MBP around so i gently moved it up and down - the rattling stopped and I found the missing screw on the ground.
6.I put the screw back in its place but the banding still persists and the laptop won't move beyond the 'Restart yr comp' pg (pressing and holding Start still will not restart the comp.
What I have done so far to try and solve this -
a.Looked under Discussions, found an exact similar problem with pictures at http://discussions.apple.com/thread.jspa?messageID=7382672& .
Only solution/diagnosis on that thread reads as a VRAM issue, that needs to go to Apple.No further updates from the poster, so not sure what happened.
b.I did a Hardware Test by putting in the first CD of the OS - It says no problem.
c.I reset the PRAM- did not help.
d.I reset the MBP Power Manager - did not help.
e.I removed the battery and put it back in - did not help.
Can anyone suiggest anything at all ?
I also want to know if its technically feasible to move my hard rtie contents to a storage device if my comp needs to ship off for repair as all my work is on the comp and is not backed up :o(((((.
I'm still under warranty but travelling in India so can't just ship it off (I think). I bought it in USA, and as I understand its a global warranty.
Any suggestions or answers most appreciated.
Regards,
Venkat

An update -
Still no luck with getting the stripes off or actually getting to my home screen.
Did run the computer check (Hardware Check) from the Setup Disc 1 again, and this time the full modse, and again, no problems reported.
Am not worried about sending off my MBP to repair; am mostly worried as to wether I can retrieve my data off the comp before I send off.
Read somewhere that I can use the macbook pro as a disc by firewiring two macs together, I'm hoping that will work.
I 'tested' my Mac to see if it goes into firewire mode (Power + T) and it does, so I am hoping this means that it will be seen as a drive on the other Macbook Pro I plan to firewire it to.
Feel a bit lost without my MBP!
Any suggestions/ tips really welcome :o).
Regards,
Venkat

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