Because I bought my current pc in 2003 and manufactured in 2001, I've decided to build a new one myself
For those of you who are interested these are the specifications:
Scythe "SLIP STREAM" 120mm Case Fan
ASUS M4A785TD-V EVO
AMD Phenom™ II X4 995 C2 125W
GFX: Integrated ATI Radeon™ HD 4200 GPU
Kingston ValueRAM 2x1GB 1066MHz DDR3 ECC CL7 DIMM (Kit of 2) with Thermal Sensor
Samsung Spinpoint F3 1TB
Trust Wireless Optical Multimedia Deskset DS-3250
Display, optical drive and other hardware such as a printer/scanner I'll use from my old pc.
Optical drive will use a bidirectional IDE - SATA converter.
As you can see, it's not a gaming pc, focussing on CPU rather than GFX.
It can easily be expanded and should last quite a few years, just like my current pc did.
Many thanks to Lippy for helping me find the right parts. ~Kiana~