Oldie to Linux, newbie to linux networking.

I have a Linksys LNE100TX ethernet card running on Mandrake 8.0. The installation detected the card with nio problems as far as I can tell. The eth0 interface comes up with no errors at boot time. However, I am connected to a switch that requires I to turn off autosensing and force the card into 10baseT, half dulpex mode.

I added the "appropriate" incantation to the /etc/modules.conf file (from memory, I am at work and the box is at home):

alias eth0 tulip ## already existed, I added the next line
option tulip options=3 full_duplex=0

No dice.

I then downloaded ftp://ftp.scyld.com/pub/diag/tulip-diag.c, compliled it and ran it as

./tulip-diag -F 10baseT

No dice.

Any ideas on how to turn off autosense mode?

Linux-Mandrake