I have a re 2 divco card. I cheated a little as I was completing a new install and had nothing to lose by installing other systems. I installed Mythbuntu 8.10 (as LinuxMCE is based in Kubuntu) to test my card. i had huge problems at first until my Mythbuntu download was crupt. I redownloaded had no poblem following the instruction from a thread in the ubuntu forums. All work perfect.
I then tried the LinuxMCE path again following the Wiki for the kernel update and steps from http://forum.linuxmce.org/index.php?topic=7284.msg45955#msg45955.
Also read through http://ubuntuforums.org/showthread.php?t=616103
for all the driver and remote information required.
Just step through it all and all will be good.
I am a newbie to Linux and it all went well for me. (I do recommend copy/paste against typing though. I had huge problems until i learn cntrl +shift + c(copy) or v(paste) in the terminal)
Repost if you need more assistance.
Do me a favor thought. Write down all the steps (idiots guide) that way we can sent to Thom and get him to make up one of the thingys that allow this to all happen automagically, or at least type in the steps to this thread so as to let other have the full answer I havent learnt how to do them yet.