I have been using this method for a while now with pretty good
results.
Points to note though, Make sure PCB is really clean, I use a green
scouring type pad and water to scrub the board firts then wipe with
alcohol or thinners prior to transferring.
I bought a laminator from this website
http://www.dynaart.com/index.html and it works great, I also found a
similar one at an office supply for 1/2 the price.
At the same website they sell a roll of green plastic that you
transfer on after the toner to help seal the toner...it really works.
I have had fair results with their toner transfer paper, but am not
totally satisified although it could be my printer, not the paper.
I am using thier roll of white plastic to transfer a psuedo "silk
screen" component legend and I absoloutely love it.
Sorry if this is starting to sound like an advertisment but I am
overall quite pleased with my results.
They have small cans of translucent green paint that acts like a
green soldermask, you spray it on the copper side, wait for it to dry
and it becomes a solder mask, you can soder right through it at the
pads and the remainder remains to protedt the copper tracks.
I am goin to try different printers and also maybee the magazine
paper for toner transfers as Thier TT paper gets expensive after a
while.
Hope this helps.
David