Yes kind of, am using 64-bit windows 7 now, took my data from GTC running on vista, should all be the same, if it's the same version of GTC.
You just have to find out where the data is filed on xp, copy and paste it, into the corresponding place in windows 7.
Have a look in application data / roaming / Garmin / devices.
If you can't find application data, set the folders to see all in control panel, then go to C: drive.
Edited: 31/12/2009 at 18:23