Sorry to be a pain - I bought a (bargain priced) copy of Birth of America at Zeller's - I had the same trouble with entering the serial number from the product. I'm currently using windows 7 - I tried entering the product key code using notepad to edit the ASCII file general.opt but my computer denied me access to do save changes in that file and I'm not savvy enough to figure out how to get that access...
I loaded the latest patch for WIA but no luck - when I run the configuration utility the enter key code field comes up, and then immediately followed by this error message:
"The instruction at 0x00000006 referenced memory at 0x00000006. The memory could not be read. Click OK to terminate the program"
I have no doubt it's possible to run this game on my system, but I'm not getting it myself

...I'd like to try this game; I had relatives who fought on BOTH sides of the conflict known in America as the French and Indian Wars...
Any help would be much appreciated. Thanks in advance!