On Fri, 17 May 2002 16:10:05 -0400 "Rose, Brian"
<Brian.Rose@icn.siemens.com> wrote:
 
> ifconfig media 10BaseT rtk0

Syntax error, words in wrong order are.  I bet you got this:

$ ifconfig media 10BaseT rtk0
ifconfig: SIOCGIFFLAGS media: Device not configured

It's not obvious, but that means the "media" device is not configured.  Of
course, there is no "media" device (which is sort-of what "not configured"
means).  You don't want to "ifconfig media"; you want to "ifconfig rtk0". 
Try:

$ ifconfig rtk0 media 10BaseT

HTH.

--jkl