Your hassle is the 9000 ALL-IN-WONDER card, its boarderline for the game. Need to reduce as much as possible the load on the Video Card. The error you got was likely caused by the increased load V1.52 put on the Video Card - 1.52 had a significant shift from main system RAM to Video RAM to free up system RAM for lower end machines. You have a good cpu, but low end video card, if you can get hold of a mid range card you will resolve many hassles with this.
Meanwhile...
By now doubtless you have had many trys at sorting it. I strongly suggest you do a clean deinstall/install - see
http://forums.civfanatics.com/showthread.php?t=152620
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.
ini file is at
C:\Documents and Settings\New User\My Documents\My Games\Sid Meier's Civilization 4
Open it and edit with 'Notepad' - click start - select run - type notepad - navigate to the file to pen it
Then
- 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 res in the ini fileto16 bit or even 256 colours
- 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 (obviously notan option if a Multi Player)
- Ring Dell and askif there is an updated sound driver for the machine yours is dated 2002
(Sound Driver in Dxdiag
Driver Name: smwdm.sys
Driver Version: 5.12.0001.3538 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 12/19/2002 17:48:48, 539008 bytes}
Video Drivers
Try the Video 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
The actions above are a fair number, if you are not used to doing them , may be easier to get a friend torun thro the list for you. There are no guarantees they will work with your card, you still may have problems.
You are boarderline for graphics, if you have the dosh and the machine will take it, get a mid range card, that 9000 ALL-IN-WODER will cause you long term grief with Civ IV
Regards
Zy