www.sidewindercomputers.com also ships internationally, they have fair shipping prices, and are really really helpful,kind informative and overall service-minded.
I know since i live in Sweden and have still had dealings with them from time to time.
If i were to get my feet wet for the first time, (Darn it 7 years too late...) i would get myself a Apex kit from Swiftech. Or buy mostly the same stuff in pieces, but change some stuff.
You want:
Apogee/storm rev2 (depending on you wallet) for cpu-block (heatexchanger between cpu and water.)
mcw55/60 (again depending on wallet/ type of hardware) for gpu-block (heatexchanger between you graphics card and water)
MCP655/mcp350 rev1/rev2 (Depending on wallet and desired noise/performance ratio)
This would be the pump circulating your water, higher pressure = better performance in this scenario anyways, that kinda depends on how the cooling hardware ei blocks were designed.
Swiftechs radiators/heatercores (I forget what they are called but u cant miss em, big blue(black things to put fans on ..lol ) Get either the duobble or tripple 120mm for good performance/ low noise ratio. (Alltho that also depends on the fans u use/ if u put them on a rheobus or not)
Anyways the heatercore/raditor is the part that does most the work. It is the heatexchanger between water and air and the quality/size and choice of fans, is what makes or breaks a H2O setup.
Figure out if you want a tank/resevoir or just a T-line/fillport. This is usually a taste-related choice. Has no real impact on performance, just ease of installation. Alltho properly done a T-line can be just as easy as a tank/res.
Now figure out if u want high performance or low noise. The choice of fans is quite critcal in a water setup, and its important to get the fans that gets you closer to your goal, may it be uber-overclok or just low noise with tolerable temps.
One way is to get fans from the middle and use a rheobus to lower the woltage across the fans until u get the desired airflow/noise ratio. This of course works with high power fans too, just make sure u get ones that likes to be undervolted ei those with specs saying 7-13 volts operating voltage for example.
But mainly, do what the guys says, read the stickys, look at others rigs. Picetures DO say a thousand words! read up on specs, tests and try to form your own opinion/experience. Lots of answers in forums like these has a tendency t be somewhat subjective
So do get lots of info from different sources and form your own opinion.
All in all watercooling as most tech-related things cant be learned entirely by asking questions, one has to learn by doing/ see what others have done.
hope this helps.