Well, you see, if the user only uses the PC for internet, e-mail and work, then her PC can last a while before buying a new one.
To get optimal performance out of it, get another 512MB RAM. I've seen some at Best Buy for $35. Also, the video card...I had the brilliant idea to game on a Geforce FX 5200...but wow...that's so not great for some new games.
So, get a 5200, but that's if you don't game or play very lite games. If not, get a 6200, 6600 OR a Radeon 9600 or 9800.
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The rigs:
1- ASUS P4S800D-X / INTEL PENTIUM 4 3000MHZ HT FSB800 / 1GB DDR RAM KINGSTON VALUERAM DUAL CHANNEL / AOPEN AEOLUS GEFORCE FX 5200 128MB/ 160GB MAXTOR DIAMONDMAX 9 ATA-133 / 10.2GB FUJITSU ATA-66
2-PC CHIPS M825G V9.2C / AMD ATHLON DDR 1333MHZ (2666 EFFECTIVE) / 1GB DDR 400 AT 333 (DUE TO ONE DDR 333 STICK / NVIDIA GEFORCE 4 MX 4000 / 120GB MAXTOR DIAMOND MAX 9 / 60GB MAXTOR DIAMONDMAX 9
3-Dell Optiplex G1 / Intel Pentium II 400 / 128MB RAM PC-100 / 4.2GB WD HDD / Some onboard crap 2MB card
4- ABIT BH6 / Intel Celeron 366 / 128MB RAM / 2GB Quantum HDD / 8MB ATI Rage 3D Pro
5-Intel SE440BX / Intel Pentium II 350 / 128MB RAM PC-100 / 40GB Maxtor HDD / Matrox MGA Millenium G200 8MB
6- IBM Machine E5U / Intel Pentium II 350 / 128MB RAM PC-100 / 3.2GB IBM HDD / 2.1GB Quantum Bigfoot HDD / ATI Rage IIC 4MB (BIOS says Mach 64)
7- Intel SEA440LX / Intel Celeron 333 / 128MB RAM PC-100 / 4.2GB WD HDD / 4MB ATI Rage IIC
8- Intel AN430TX / Pentium MMX 200 / 96MB RAM PC-100 / 850MB WD / 524MB Seagate / ATI <ach 64 2MB | 
Linear Mode
