When my Pc has booted up and the desktop appears I get the message 'Please insert Cd Rom virtual truck programme' looking for D:\install\teraUSB\vTruck2.exe. What do I have to do stop this message appearing and what programme is it? Any help would be appreciated.
Assuming you're on NTL this  is what solved mine
1 "Windows 98 First Edition and ntl:home 100 USB Cable Modem If you intend to use the ntl:home 100 (Ambit) cable modem with a USB connection on Windows 98 First Edition, then do not run the Broadband Installer v1.1 CD-ROM until you have read click here. This caution applies only to v1.1 of the CD-ROM. The problem was fixed with v1.2 onwards.
2 Problem with Virtual Truck every restart In some circumstances (believed to be associated with previous failed installations that did not run to normal completion), on every restart, Windows asks for: Insert CDRom. Please insert your CDRom with the Virtual Truck program. Looking for file: E:\INSTALLS\TERAETH\VTRUCK.EXE The name of the file requested may differ in detail. Even after inserting the CD-ROM, the PC continues to make the same request on every restart. To repair this situation under Windows 98/ME: Click Start, click Run. Enter msconfig and click OK. Click tab Win.ini to bring it to the front. Click the [+] sign beside [windows] to expand this item. If you see an entry run= involving \vtagent\reboot.exe, then uncheck it. Click OK to exit the System Configuration Utility. "