I have never had much luck with Wine and I have found Crossover Office to be - well - ponderous and I found sidenet to be "iffy."
That said, I have had an outstanding result with winetools. IE6 installed and runs flawlessly along with all the necessary plugins including java and WMP. There are a host of other applications supported as well.
The TRICK is to use an older version of wine. Of course, YMMV. Also, I think that the winetools scripts created an alsa problem (which I fixed by reinstalling alsa-libs).
I tried the older wine source but it would not compile (possibly a GCC4 problem).
Winetools is here: http://ds80-237-203-29.dedicated.hosteurope.de/wt/winetools-2.1.2-jo.i386.rp...
The 20050111 rpm (works for me in FC4) is here: http://newrpms.sunsite.dk/apt/redhat/en/i386/fc3/RPMS.newrpms/wine-0.2005011...
Once installed, it reminded me of exactly why I prefer FC. However, there is the occasional web site that insists on IE with WMP and this meets the challenge.