Modify MSCONFIG from a batch or .vbs

System info:
Windows XP Pro SP3 x86

Software:
GarminExpress

Problem:
After I install GarminExpress, the program doesn't have any option to Start/Stop startup on Windows boot, so it loads every boot which takes up resources.

I know how to manually edit MSConfig, but was wondering if there was a way to create a simple script that would do the same simply by double-clicking it.

I know that MSConfig requires a reboot after changes have been made, but doesn't killing explorer.exe and restarting the process do the same thing? Maybe restarting explorer.exe could be incorporated into this script too.

Does anyone have any ideas about this?

Thanks!