Reroller Plugin/Script

I asked a guy ingame on Realms if he had a Reroller/Script for MUSH

He linked me to this

https://www.dropbox.com/s/bwyzbyzqqwgvd59/Roller.xml

So how do I go from THAT to a functioning reroller?

Save as a disk file. Use the File menu -> Plugins to load that as a plugin.

Erm..

How?

I get 2 choices

XLM or All Files

You don't know how to use a file open dialog? Just select the file you want to load and then click OPEN.