A friend built this computer about six years ago, the motherboard is a Microstar K7-Pro (MS6195 ATX IR3), and I do have the manual. I found the chapter on th BIOS setup, and it looks like I did get to the BIOS setup location, there is a copy of the same menu.
It has the following options:
Standard CMOS Setup
Advanced CMOS Setup
Advanced Chipset Setup
Power Management Setup
PCI/Plug and Play Setup
Load Fail Safe Settings
Load Optimal Settings
Peripheral Setup
Hardware Monitor Setup
Change Supervisor Password
Change User Password
Auto-Detect Hard Disks
Save Settings and Exit
Exit Without Saving
Which one should I choose to get to the LAN or what ever settings? By the way, my keyboard is a cheap plug in.