Woodie
I've just found a link on the xda-developers forum that seems to cover what we want. Be prepared for a bit of reading and perhaps taking a little on faith. Quite a few users seem to have used the instructions successfully.
This post has links to three other posts on the forum.
1. Covers installing a piece of software that makes customizing your device easier (Hard SPL)
2. Covers backing up your standard ROM, handy if you need to return under warranty (Can't do this without step 1)
3. Covers installing a piece of software (Kitchen) that allows you customize or install ROMs (installing the standard HTC ROM effectively de-brands your handset) People have built custom ROMs that add or remove features from the standard.
I haven't actually done this myself, hoping to find the time over the next couple of days.
http://forum.xda-developers.com/archive/in...p/t-498324.html