Thank you for the replies. Your help is very much apprechiated.
This is how far I got:
CPU- Intel Core i7 870
Motherboard- Asus P7P55D LE
Graphics card- Asus GeForce GTS250, 1GB, GDDR3
RAM- OCZ 6GB, DDR3, 1333MHz, CL9, Kit Of 3, Gold
HDD- Western Digital 640GB 7200RPM 16MB Caviar SE16 + Intel X25-V SATA SSD 40GB 2.5" MLC
PSU- Corsair 550W 12CM ATX12V2.2 80+
Case- Antec THREE-HUNDRED
Acer H233HEBMID, 23" monitor
When including the OS, the PC fits perfectly into my budget, but I wonder if I haven't overdone with the RAM, and can anyone tell how good would the HDD+SSD combo come along? Would the 550w PSU be good enough?