hmm they dont seem to ship to england as far as i am aware... i think MPJA do but i havent really looked...
http://www.quasarelectronics.com/3092.htm I think this is the closest you will get in the UK. A bit overkill but should work. Not that expensive either consider it includes a nice remote control. Well, this way, you can probably wire the reset button as well and maybe wire the other relays to the cd-dom drive buttons. I'm tempted to do that now...
That's a great kit you found there. SO cool I had to poke round the rest of the site. Another approach could be: http://www.quasarelectronics.com/3157.htm Though what's handy about the first is that it can run off 5V, and you can pcik that up from the PSU even turned off, I think.
yeah, you short out the +5V line to the gnd to "Hotwire" it. don't take my word on it, i just think it's that. I'm just a little messed up on vicodin right now, had my wisdom teeth out a few hours ago