Okay, first the motherboard. You say you want thermal protection on it, yet no onboard audio or video?
Here's a little system I've put together with prices from newegg.com.
Case/PSU:
CHIEFTEC Server Chasis (Aluminum Workstation Tower with Plastic Front Cover)
In a choice of (link provided with pictures of color case):
Blue (out of stock):
http://www.newegg.com/app/Showimage.asp?image=11-125-129-01.JPG/11-125-129-02.JPG/11-125-129-03.JPG/11-125-129-04.JPG/11-125-129-05.JPG/11-125-129-06.JPG/11-125-129-07.JPG/11-125-129-08.JPG
Green:
http://www.newegg.com/app/Showimage.asp?image=11-125-128-01.JPG/11-125-128-02.JPG/11-125-128-03.JPG/11-125-128-04.JPG/11-125-128-05.JPG/11-125-128-06.JPG/11-125-128-07.JPG/11-125-128-08.JPG
Yellow:
http://www.newegg.com/app/Showimage.asp?image=11-125-127-01.JPG/11-125-127-02.JPG/11-125-127-03.JPG/11-125-127-04.JPG/11-125-127-06.JPG/11-125-127-07.JPG/11-125-127-08.JPG/11-125-127-09.JPG
Silver (out of stock):
http://www.newegg.com/app/Showimage.asp?image=11-125-126-01.JPG/11-125-126-02.JPG/11-125-126-03.JPG/11-125-126-04.JPG/11-125-126-05.JPG/11-125-126-06.JPG/11-125-126-07.JPG/11-125-126-08.JPG/11-125-126-09.JPG
Specs:
Power Supply: Turbo Link (P4) 420 watts ATX 12V (AMD Approved Power Supply)
Front Accessible: 4 x 5.25", 2 x 3.5", Internal: 4 x 3.5".
Dimensions: 473 x 205 x 522 mm (D x W x H).
Other: 7 standard expansion slots.
Optional 4 x ( 80 x 80 x 25)mm cooling fans.
Weighs 18 pounds.
Cost: $129.00 (American)+ $18.00 Shipping and Handling (may vary on your location)through FexEx= 147 American Dollars
Motherboard:
SOLTEK SL-75DRV5 (Purple Ray) VIA KT333
Specs: Supports DDR SDRAM @ 333/266/200 MHz. Supports Ultra ATA 133/100/66. Multiplier Setting. BIOS FSB Setting. AGP, DIMM Voltage Setting.
RedStorm Overclocking. SmartDoc. Anti-Burning Shield. SCR (Smart Card Reader) Interface. Optimized for all Socket-A processors. **2-YEAR WARRANTY** (Termalright AX-7 does not fit on this motherboard.)
Cost: $88.00 (American) + Free Shipping and Handling (May Vary depending on location) through FedEx= 88 American Dollars
Processor: AMD Athlon XP 1800
Specs:
CPU: 1.53 GHz
Type: 1800 XP
Cache: 256K
BUS: 266MHz
Socket A (PGA) OEM (Processor Only)
Cost: $92.00 (American) + Free Shipping and Handling through FexEx (May vary depedning on location) = 92 American Dollars
CPU Heatsink:
Thermaltake Volcano 7+
Specs: 70x70x25 mm fan. Fan speed control: H: 6000/M: 4800/L: 3000 RPM. Air Flow: 49 CFM
Cost: $42.00 (American) + $6.00 Shipping and Handling through FedEx (May vary depending on location)= 48 American Dollars
Video Card: I would honestly wait for a Radeon 9700............. No prices on that yet.
RAM: 512 MB (2x 256 MB) CORSAIR MEMORY XMS Extreme Memory Speed Series 32MX64 PC-2700C2PT With Platinum - Silver Heat Spreader OEM
Specs: 333 MHz (PC 2700)
Organization 32M x 64
CAS Latency 2-3-3-5-T1
Memory type DDR
Cost: $246.00 (American) + Free Shipping and Handling through FedEx (May vary depending on location)= 246 American Dollars
Hard Drive Disk: MAXTOR 60GB 7200RPM Model # 6L060J3 -D740X OEM, DRIVE ONLY
Specs:
Size: 60 Gigabytes
Interface: IDE ULTRA ATA133
Seek time: 8.5ms
RPM:7200
Cache 2MB
OEM(Drive alone) 3 Year Manufacturer Warranty
Cost: $88.00 (American) + Free Shipping and Handling through FedEx (May vary depending on location)= 88 American Dollars
DVD-ROM: PIONEER INTERNAL ATAPI 16X DVD-ROM MODEL 500M - OEM, DRIVE ONLY
Specs: 16X DVD/40X CD-ROM, 256k buffer 95ms DVD-Rom High-Speed Average Access Time 80ms CD-ROM access time. Reads single and
dual layer DVD-ROM/Video, -R/RW, CD-ROM, Audio CDs, CD-R/RW, Video CDs, Photo CDs, Hybrid CDs, CD-Extra (CD-Plus) and
CD-Text Discs
Cost: $47.00 (American) + Free Shipping and Handling through FedEx (May Vary depending on location)= 47 American dollars
Sound Card: Creative Labs Sound Blaster Audigy Xgamer
Specs:
http://www.newegg.com/app/specification.asp?item=29-102-150
Cost: $84.00 (American) + $7.00 Shipping and Handling through FedEx (May vary depending on location)= 91 American dollars.
Speakers: Klipsch Promedia 4.1 THX Certified 5 piece Personal Audio System
Specs: 400-watt RMS (Simultaneously, all amplifier channels driven), 160 Watt Subwoofer, Frequency Response: 29Hz - 20kHz.
Headphone and stereo miniplug input jacks.
Cost: $245.00 (American) + Free Shipping and Handling through FedEx (May Vary depending on location)= 245 American Dollars
OS: You can use what you want have right now, or you could get Windows XP home edition for around 100 American dollars.
TOTAL: $945.00 (945 American Dollars)
This price may be different depending on whether you get Windows XP or stay with your current OS (unless you already have XP).
I would recommend staying with your current OS, and saving money for the Radeon 9700, since you have 315 dollars leftover,
if you start saving, you should have enough to get a Radeon 9700.
Have any other questions, just ask!