The game will not play on your entry level system with the integrated video chip.   System requirements suggest a 64 mb video card with T&L, that you do not have, and at least 512 mb of memory.  Link below tells you of the system requirements.  You need a dedicated video card in order for it to work better.

 

http://www.softpedia.com/reviews/games/pc/Caesar-IV-Review-40969.shtml

 

System requirements:

MINIMUM SYSTEM REQUIRED

Intel(R) Pentium(R) 4 1.6 GHz or equivalent AMD(R) Athlon(TM) processor or higher
512 MB of RAM
64 MB video card ( with Hardware T&L including Pixel Shader 1.1 or higher support)
2.0 GB of free hard disk space

 

 

http://www.newegg.com/Product/Product.asp?Item=N82E16814103016  X1300 PCI slot card - Expensive for what you get in terms of performance

http://www.bestbuy.com/site/olspage.jsp?skuId=7638292&type=product&id=1130987962366  6200 PCI slot card - Expensive, for low end game settings

http://www.powerleap.com/VideoCards.jsp#PCIbookmark  PCI slot 6200 card. A little less costly

 

How to disable your integrated video chip as posted by the Moderator

2200, 2300, 2350, 2400, 3000, 3100, E310, B110/1100

* Right click the My Computer icon
* Click Properties
* Click the Hardware tab and/or the Device Manager button
* Open the Display Adaptors. You should see the Intel video card
* Double click the listing for Intel whatever
* At the bottom under "Device Usage", click the down arrow and change this to "Do not use this device, disable"
* Click OK- Apply- OK
* Close all boxes when done
* Click Start- Turn Off Computer- Restart
* Press F2 at the blue Dell logo screen
* Down arrow to either:
Onboard Devices- Primary Video
Primary Video
Integrated Devices- Primary Video Controller
* Change yours to AUTO or PCI (whatever is listed)
* Press ESC several times to Exit and Save your changes
* As the system starts to restart, power the system off
* Open the case cover and add the PCI video card
* Connect the monitor to the added PCI video card
* Power on your computer
* Let the computer boot up and load the drivers off of the CD provided with the card

Isn't it possible to have the CPU doing the T&L-jobs? reference: http://support.intel.com/support/graphics/intel945g/sb/CS-022649.htm And if this is true, isn't it possible to make the CPU do the T&L-stuff instead of the video card?