We'll mention some alternatives (or we could also say: competitors) to Wine here that might come in handy if Wine is not usable for the program or job you want it to do, since these alternatives usually provide better Windows compatibility.
VMWare is a software package to emulate an additional machine on your PC. In other words, it establishes a virtual machine that can be used to run any kind of Intel x86 compatible operating system in parallel to your currently running operating system. Thus you could use Linux and at the same time run Windows 98 in a virtual machine on the same screen.
Sounds nice, doesn't it? Well, there are some drawbacks, of course... First, VMWare is pretty expensive, and second, you need a licensed copy of the operating system you want to run. Third, since VMWare is a virtual machine, it's quite slow. Wine doesn't have any of these limitations, but unfortunately this also means that you will not have the relatively good compatibility of a real original Windows system if you use Wine.
Win4Lin by NeTraverse allows you to run a special version of Win98 in Linux. Compared to VMWare, this has the advantage that it's faster, but you still have the license fees.