No special measures necessary, follow the standard installation process. Detailed instructions on installing modules are available in the XOOPS Operations Manual.
1.1 Install
extract the module folder 'contact' into the /modules directory
Log in as admin and goto Xoops Admin area
Install the module through Admin -> Modules -> Install Modules
Figure: module administration and install
Configure the module
Set module and block permissions via System --> Groups.
1.2 Uninstall
To uninstall the module, just click on the red arrow: Figure: Uninstalling in module administration