If your computer guru is a true guru, he can show you how to run the game in a window within Windows or make your computer a dual boot system with one being your current system and the other being Win 98. If he can't do either of these, get a new guru.
To answer your original question, that stick isn't what you want, but your guru could load 98 on a thumb drive and set the computer up to boot from it first and if it's missing, then boot normally.
Buying or using another computer just to run 98 is unnecessary.