Map loader software does NOT work.

I have win7 64 and am running the map loader in XP compatibility mode and as an administrator, having also installed the PC suite.

i have tried connecting the phone both in PC suite mode and in mass storage mode, and all the map loader does is moan at me that there is at least one device already connected and to reconnect the phone in pc suite mode.

it's a bunch of bobbins!

what is the least toss method of getting offline maps onto my n900 for those of us without a working map loader?

cheers