Don't worry about the version-- there was a patch available ages ago that fixed one problem with certain video drivers back in 2003/2004 and this problem was later fixed by driver updates-- unless you are playing on a PC from that time frame and have not updated your drivers then the patch will not do anything.
What OS are you running? Disk or Steam Version?
Have you enabled any compatibilities?? To do this on your desktop find the short icon you use to start the game... right click the icon-- and select properties.
A window will pop up... select the compatibility tab.
Near the top there will be a check box for "Run this program in compatibility mode for:" --
tick this check box and in the drop down below this select Windows 98/WindowsME.
Now try running the game again.
If the problem persists--- try going back to the same screen as above and lower down tick "Disable visual themes"-- this has been known to fix some problems.
It is possible your install is partially corrupted in which case you may need to reinstall the game....
I would wait a bit before you reinstall and see if anyone else has any suggestions.
I'm by far not a PC troubleshooting expert-- just seen a lot of these problems before and the above is a simple/easy thing to try.