As is probably well known to everyone other than me, this is apparently
not possible because of GTK+ requirements and the installation failed.
Since Cairo was introducted in Gtk 2.8 support for Windows 9x was dropped
(although I'm sure if a developer was brave/foolish enough it woudl be
possible to revive but there isn't enough interest in old versions of
Windows anymore). There are some hacks which might allow you to get
Inkscape running on older machines but I wouldn't recommend it, especially
not on someone elses machine.