Jo - I have used RideWithGps in the past and it is a nice system, but with just a quick look I couldn't see how to generate a Route sheet from an imported map, perhaps I'll have a more in depth play with it at the weekend.
Manotea - If you look at the code you'll see that CueSheet is built upon the GmapToGpx script, you might want to check it out as CueSheet seems offer more features.
It seems that both scripts don't work with the new version of google maps, but then with the fondness google have for deleting popular services I guess we should be glad maps are still available