I have a problem with "Command Prompt" :
How to solve this problem ?
You have to follow two steps for this :
1.navigate to that directory through command :
cd C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\BIN
2. Then execute your command.
stsadm -o uninstallfeature -name UserInterfaceWayBillActions -force
type in
C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\BIN\stsadm -o uninstallfeature -name UserInterfaceWayBillActions -force
and hit enter