Well, here is what I would do. Get one of those nifty adapters that can hoop any kind of HDD up to a USB port. Then take the HDD out of your big computer, put it into the USB gadget and then power up you laptop and it should find the HDD as a USB storage device.
Search Google for
USB HDD adapter
Make sure to get one with an AC poser adapter, the laptop may not have enough power for the standard HDD. Expect to pay $20 to $40 for a good one.
Then you can get to your files.
If you are 'Jack' and the USB drive is E: then your files are in:
E:\Documents and Settings\Jack\My Documents
For me, that is the easy way.
I am better with a screwdriver that with software.
At least I think I am!
The other way is to boot your Desktop with Ubuntu...
and use a cross over cable...
Na, I don't want to explain that. Too much mental work.
Find a screwdriver.