Question

If this is just for home use, don't worry about a GPU upgrade for photo editing. That money will go much further in a platform upgrade later than a GPU that doesn't offer any real benefit now.

Check the Intel Pentium 4 section with the list saint19 linked in and shop to your budget. Ebay might be a good spot to look for a CPU that old too.

http://www.pricewatch.com/cpu/

You know your CPU socket so get a CPU in your budget. Any dual-core should be good for your computer.

Two things:
1) get more RAM (I recommend 2GB; don't get 4GB unless you have a 64-bit system. You'll want two sticks of 1GB DDR3200. Kingston ValuRAM is not bad. I've used it several times)

2) Your RAM frequency seems wrong. Make sure it's set to 200MHz (2x200 is 400MHz which is what Windows should report)

Parts recommend:
1) CPU: Intel E6600
2) Graphics card: Asus HD4350 512MB Silent
3) 2x1GB PC3200/DDR400 Kingston ValuRAM
4) 120mm FAN: low-flow (CWM), low-noise for back of case near CPU if possible
5) Power supply? (may not be needed. this graphics card consumes little power and the CPU likely is on par power-wise with your old one. If power issues happen such as major crashes during any major task then I'd get something like a 450W Corsair with this setup.

You can modify the above if you find deals. Note that the graphics card won't game well but it will hardware decode video and do any non-gaming text identically to any other high-end card (except generate a lot of noise and heat).

The graphics card is also cheap so if it turns out you'd like to play video games then the CPU could likely be paired as high as an HD5870 (some games will be CPU-limited). For inexpensive gaming an HD4770 is okay.

*test new RAM with Memtest

Update:
Unless you need hardware video-decoding (I use MPC-HC in the K-Lite package from www.free-codecs.com ) or have Vista or Windows 7 there's little need for anything beyond on-board graphics if you don't game.

Thank you for sharing your knowledge and for taking the time to reply.
Pete.

Best answer selected by pete_70.

Photonboy,
Thank you for your help. Much appreciated.
Pete.

This topic has been closed by Mousemonkey