Windows XP HP Pavilion died now have HP Vista Help needed with moving files

My HP Windows xp can no longer be seen on any monitor. The hard drive still runs. I upgraded to a new HP Pavilion p6120t with Vista.
I want to move files (pictures, documents, Quicken) from the xp to the vista.
I purchased a cable and program to do so but it has to be attached to the xp but I can't do this because I can't see the screen since the old xp won't do that anymore.
What are the suggestions as to how to move my files?
I do have many of them backed up to an external hard drive and thumb drives but the xp died before I updated them all.

Thanks for any suggestions.

Have you double checked if the vga output still works?

Yes, the VGA outlet works just fine with my new HP Pavilion tower. I tried new VGA cables with the old computer and also connected it to a different monitor. It still would not display anything.

Take the drive out, put it into an external enclosure that attaches via USB (cost appr. $20) and read it as an external drive from your new system. Examples: hdd enclosure - Search at Office Depot

Thanks so much. I'll give this a try.

Also, why don't you check to see if you can do it in the XP's Safe Mode.