Nick,
To get started, it will take some study on your part. This is a good forum to begin with:
http://laserpointerforums.com/There is a lot of good info on the forum, as well as a lot of nonsense. The nonsense will be evident.
Most items you will need can be had on eBay from various sellers, most of whom are regulars on the laser forum.
A couple of guys on hobbycncart forum purchased their lasers wired and ready to go. I don't know from whom, but we can find out.
How you get setup will depend a lot on your budget available and electronic/electrical skills. It is easy to ruin a +$50 laser diode with wiring/installation mistakes. Please don't ask how I know this
Please feel free to PM me at: picengraveATverizon.net.
Regards,
John Champlain
John