Your hardware specs will be differant and will have all sorts of problems. You might get lucky and windows 98 will install the correct drivers and run, but the fact still remains you wont have a valid boot file.
I do know this program that might help if u wanna get your hands dirty but I've never had to try it.
this is a part of the readme file in the program tellin u what it does:
OSL2000 - an advanced multi boot manager. Using OSL2000 boot manager,
you can easily install, boot and manage up to 100 independent OSs in
your computer. A multi boot manager is a program that lets you have
multiple operating systems in your personal computer. OSL2000 boot
manager, in addition to being a normal multi boot manager, has
advanced features that let you seamlessly multiboot, install, and
manage multiple OSs like Windows, Linux, etc. It lets you have
multiple copies of Windows in your system. It lets you boot Windows
even from your second harddisk! OSL2000 boot manager does not require
any configuration. In fact, OSL2000 boot manager is so advanced that
it does not even have a configuration screen!
For more information:
http://www.osloader.com