The only thing I can think of is your missing a package.
If you install Eric's wine package and then go to /usr/lib/wine and run ldd on the msxml3.dll.so you might see what lib is missing.
For reference it should give you this :-
Code:
linux-gate.so.1 (0xffffe000)
libxml2.so.2 => /usr/lib/libxml2.so.2 (0xf74c2000)
libdl.so.2 => /lib/libdl.so.2 (0xf74bd000)
libwine.so.1 => /usr/lib/libwine.so.1 (0xf737c000)
libm.so.6 => /lib/libm.so.6 (0xf7350000)
libc.so.6 => /lib/libc.so.6 (0xf71ce000)
libz.so.1 => /lib/libz.so.1 (0xf71b8000)
liblzma.so.5 => /lib/liblzma.so.5 (0xf7193000)
libpthread.so.0 => /lib/libpthread.so.0 (0xf7179000)
/lib/ld-linux.so.2 (0xf76eb000)
Packages for those libs
libxml2-compat32-2.8.0-x86_64
libxml2.so.2
glibc-2.15_multilib-x86_64
libdl.so.2
libm.so.6
libc.so.6
libpthread.so.0
ld-linux.so.2
wine-1.5.5-x86_64
libwine.so.1
zlib-compat32-1.2.6-x86_64
libz.so.1
aaa_elflibs-compat32-14.0-x86_64
liblzma.so.5