If I were building a system, with some future upgrade potential, on the cheap at Newegg, I would use the following:
EVERCASE E4252W005A, Intel P4 / AMD, 10-Bay, P4, Truely Screwless ATX MID Tower Case. BEIGE. W/ 1 Side Case Fan & 2 Removeable HD cages. Retail. *** No Power Supply. *** External: 4 X 5.25 and 2 X 3.50. Hidden: 4 X 3..50 (2 screwless removeable HD Cages). 2 x Front USB ports. 1 x side ball bearing fan with bracket. more info-> N82E16811127001 $22.00 $22.00
ECS K7S5A SiS® 735 SOCKET A MOTHERBOARD - RETAIL with On-Board LAN Port and Sound 5 PCI Slots, 1 4X AGP slot, 1 AMR slot. 2 DDR DIMM sockets and 2 DIMM sockets support (can not be used simultaneously). Two 184-pin DDR SDRAM (DDR200, DDR266) or Two 168-pin 3.3V SDRAM (PC100, PC133). Maximum: 1.0GB (DDR or SDRAM). Supports all AMD XP Processors. more info-> N82E16813135102 $52.00 $52.00
VISIONTEK Xtasy 5632 GEFORCE2 GTS-V 4X/2X 32MB DDR AGP - OEM
This VGA card offers high performance based on the GeForce2 GTS-V chipset and 32mb 256 bit DDR memory. Visiontek is the only Nvidia board partner to offer this card. Part# 72440.0 more info-> N82E16814129007 $48.00 $48.00
SPARKLE 300 WATTS ATX UL APPROVED POWER SUPPLY MODEL # FSP300-60BTVS - OEM AMD (Athlon XP 2100+) Approved & Intel Pentium 4 Ready - One Year Warranty more info-> N82E16817103412 $32.00 $32.00
AMD ATHLON XP 1800+/266 FSB PROCESSOR CPU - OEM 1800+/ 1.53GHz, AX1800DMT3C. The AMD Athlon XP processor with QuantiSpeed architecture powers the next generation in computing platforms, delivering extra performance for cutting-edge applications and an extraordinary computing experience. more info-> N82E16819103307 $113.00 $113.00
OCZ DDR RAM 512MB PC-2400 266HzOCZ266512 CAS 2.5 Performance DDR OEM, Lifetime Warranty. more info-> N82E16820146804 $138.00 $138.00
MAXTOR 40GB 7200RPM Model # 6L040J2 - OEM, DRIVE ONLY D740X Plus Series Ultra ATA133/100 2MB Cache Buffer <8ms Seek Time - 3 Year Manufacturer Warranty. 40.0gb 7200 rpm more info-> N82E16822140127 $78.00 $78.00
Dynatron DC1206BM-L610. New Silver Color w/ dense fins High - End Cooler w/ 5300 RPM Fan. Retail. Thermal Resistance: AMD:0.49°C/W. INTEL:0.59°C/W. AMD: K7(Socket A)---1.5/1.6/1.7GHZ/ XP 1900+. INTEL®:FC-PGA(Socket 370)---866/933MHZ and 1/1.26GHZ. V/A/W
C12V/0.3A/3.6W. Air Flow:24.4 C.F.M Speed:5700RPM. Noise:40.0dBA. Weight:195gm. Dimensions(L*W*H). Fan:60*60*10(mm). Sink:61.9*63*36.2(mm) more info-> N82E16835114005 $7.00 $7.00
Subtotal » $490.00
I may be biased since networking is important to me. Another mobo option I am using is:
Gigabyte GA-7VTXE+,VIA KT266A chipset, ATA133 with Sound Socket A motherboard,5PCI ,3DDR DIMM, ATA133, AC97,BULK more info-> N82E16813128134 $89.00 $89.00
Subtotal » $527.00 + you get to take advantage of the AT133 on the Maxtor Drive listed above.
That's just my opinion, I could be wrong.