Walkinash
Your basic problem is the Radeon 9200 LE graphics card - that is a cut down version of the 9200, crudely its about 25% less performance than a 9200. Overall comparisons are:
Radeon 9200 Pro - Core 275Mhz, Memory 550Mhz
Radeon 9200 - Core 250Mhz, Memory 400Mhz
Radeon 9200 LE - Core 200Mhz, Memory 333Mhz
We may be able to get it to run, but it will be slow(ish), will not be able to play at the larger map sizes, will need to reduce video quality/textures/resolution etc, and I think you will have increasing problems with Civ IV as the game develops over time. I would seriously think about getting a mid range card to replace it, you will notice a significant performance increase, and much less hassle, mid range cards are not too bad in price these days.
Meanwhile .....
Make sure you have loaded Patch V1.52, but, also ensure that the memsaver switch in the ini file is set to 0 (figure 0 not a letter O). The reason is that 1.52 placed more load on video cards to help those with low main RAM, if memsaver is switched on (using a 1 in the ini file entry) it switches on that feature which you dont want as your graphics card is your weak spot.
- Turn off textures in the game Options menu
- Set the game resolution to as low as possible
- set your desktop resolution to the same as you are going to use in the game
- set the desktop refresh rate to 60Hz
- Turn off any background application or services running that you dont really need (via MSconfig). That includes going off line to play Civ, and turning off Anti-V & Firewall.
Video Drivers
The Video drivers you have are outdated (Apr 2004), download new drivers from here
http://www.omegadrivers.net/
Scroll down that page until you see Radeon Omega Drivers 2.5.97a (Catalyst 4.12) they are not the latest,but they are a very stable reliable set, and probably better for your older setup. If they dont work properly, try Radeon Omega Drivers 2.6.83 (Catalyst 5.11) at the top of the page
Thats a fair number of changes, if you are not confident on some post again we will try to help. If you are not confident on most, it may be better to get a friend to help with the changes. Post again with concerns etc we will try to help.
Cannot guarantee the above will solve your 9200 LE hassles, but if you want to try, keep in mind your aim is to reduce as much as possible the video load, and try to get the card working as efficiently as you can vis drivers etc.
Regards
Zy