Hi Jaume -
Boy there is a lot to tell!
The best thing is probably to look at the dedicated thread:
http://www.xt660.com/showthread.php?t=10925
...which chronicles the build up from the original bike pretty much from the moment I brought it back from the USA earlier this year - it's worth a read, even if I do say so myself!
If you have any specific questions afterwards, please just ask in that thread!
Glad you like it!
Jenny xx