for what its worth I recently got a 400D converted by the lads at advance camera services in the uk. It is a bit costly but well worth it ( a full service is included in the price)
The onlt thing I would do different is I should have got my 40D converted instead. I just didnt think I would get so much use from the converted camera, but I cant seem to put it down after 3 months of use.
Got in touch with advanced camera services in the UK and it looks like Ill go with them.
About 300 euro to convert, so just have to gather together a few more euros and Im sorted.
Will post a couple of pics when it comes back.