This card uses the Realtek 8180 chipset.
The drivers at
http://www.realtek.com.tw/ only work for kernel versions 2.4.21 and below. Mandrake 10.0 has 2.6 kernel.
You will need to use the ndiswrapper. This "wraps" the windriver for use by linux. It is built into Mandrake 10.0.
See at
http://ndiswrapper.sourceforge.net/ and read the documentation for the version in Mandrake 10.0.
I have an Admtek card and have used the ndiswrapper 0.4 with success in Mandrake 10.0. I removed the built-in ndiswrapper files and built and installed ndiswrapper 0.4. I have had success with that version.