[Darkjedi]

There are ways to 'hack' garmin to run on any storage card you want. These methods could be considered less than ethical depending on how strictly you view copyright laws. Since you are planning to buy the garmin xt software and are only going to transfer to your own storage card, its probably not that bad of a transgression. Though legally speaking you are probably still breaking some sort of copyright law even though you own the software and the memory card.

The method involves hacking garmin into accepting the serial number of your micro SD card. I believe this involves a serial key generator to ensure garmin accepts the SD card as valid. Can't directly link you to places that would allow you to do this, but if you say google garmin xt transfer sd card, you probably won't be dissapointed. Unfortunately, it's a bit techy if you're not the technologically enthused.