We support all current and stable templates listed on http://wiki.openvz.org/Download/template/precreated.
If the template you want is missing please open a ticket to let us know and we will add it for you.
After loggin in the VPS Control panel you can chose any of your server and perform basic management functions:
Rebooting your system in case your system has crashed and inaccessible.
Manage -> General -> Reboot
Reinstalling your system in case you need a clean start.
Manage -> General -> Reinstall
Use the change hostname option.
Manage -> Hosname -> Change
You can also change the root password here in case you have forgoten it.
Manage -> Root Password -> Change
The rest of the Control panel options are explained in detail in their respective articles.