i am using suse11.0 gnome. what should i do to enable sound. and lan.
Try Yast Hardware and Yast network devices
Give us more info if you want help
eg; sound card? Network device?
tell us what’s happening or NOT happening - any error messages?
If you are referring to just basic sound, then you can try following the openSUSE audio troubleshooting guide:
These might be useful reading:
HowTo Configure a network card in Suse/openSUSE 10, 11 for LAN and Internet Access.
Madwifi or Ndiswrapper Wireless Network Drivers - Suse/openSUSE 10, 11 - LAN & Internet access
They might allow you to form a background from which to ask further questions.