FW won't run

[Hrothgar]

I recently had to reformat my hard drive and reinstall everything. After I reinstalled Fantasy Wars, the game automatically started up and ran fine. However, now, when I try to run it by clicking on the shortcut--or by going to the folder and clicking on the exe file--I get a message telling me to "Please insert DVD of 'Fantasy Wars,'" even though the DVD is in the drive.

My computer specs:

Windows Vista Home Premium 64 bit
AMD Athlon 64 X2 Dual Core Processor 6400+ 3.21 GHz
4 GB of RAM
ATI Radeon HD 3870 Display Adapter

Does anyone have any idea what I can do to resolve this?

Thanks