Cool!
I can only give this advice once. Watercooling isn't like buying something at Best Buy. You have to learn the basics, terminology, minimum requirements depending on your heat load etc. It's based on science and physics, but all the hard math work is done pretty much. When you see the work done by Martin, you'll see what I mean.
Please ohh please take your time. Read a lot, and by a lot, not just browse these links for 20-30 min, become a member at at least OCForums and spend a week or two following threads, going back 30-50 threads and reading it all. Read all the stickies everywhere. Doing this will keep you from asking crazy basic questions that you can figure out on your own with a small bit of effort.
Once you decide on what to buy, your knowledge and your skills is all you have. Putting water inside a PC isn't that hard, but people do ruin mobos and video cards by silly mistakes.
Cya at OCForums, and learn, once the stuff is at your house, it's all up to you. You can't take it back to Best Buy. I'm Conumdrum at OCF.
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For your benefit please spend a few days reading a LOT. At the busiest places for WC masters. Guys who have done it for YEARS at OC forums and xtreme forums. It took me a while (I was OCing on air, aftermarket stuff, bios settings, best chipsets etc etc) to learn the language and the tricks to a easy install.
Don't expect miracles, or SUPER DOOPER over clocks. What you will get is a quiet system that can handle OC to the max of your hardware IF you buy quality and buy smart. And minor maintenance too, a bonus for the water cooler.
Also while there please read on case mods etc. The radiators are not for small cases, pumps and hose routing, wire management and other things are important. Google your planned case and the word water-cooled in one line. You might get lucky.
IF you just cool your CPU and your NB if you want, you can get by with a 120.2 sized radiator (RAD). And MAYBE fit in inside depending on your mod skillz. You want to cool your GPU too, you'll need a 120.3 sized rad, and it probably won't fit inside. The rear external rad really works great. No matter what your adding 15lbs to your PC, maybe 20lbs.
Once you got an idea of what is good/bad then start getting your system for WC put together and we'll be glad to help.
http://www.xtremesystems.org/forums/index.php? Not a noob site, but great stickies
http://www.ocforums.com/ My fav, good peeps, know their stuff, less hardcore
http://www.skinneelabs.com/MartinsLiquidLab/
http://www.over-clock.com/ivb/index.php?showtopic=20277 A GREAT Europe site
http://www.overclock.net/water-cooling/
http://translate.google.com/translate?u=http%3A%2F%2Fwww.effizienzgurus.de%2Fmain%2Findex.php%3Fcontent%3Darticle%26action%3Dview_spec_article%26article_id%3D222&langpair=de%7Cen&hl=en&ie=UTF-8 Info on rad testing
http://skinneelabs.com/
Stores
http://www.dangerden.com/index.php?option=com_frontpage&Itemid=1
http://www.petrastechshop.com/
http://www.sidewindercomputers.com/
http://www.jab-tech.com/