Hi unintentionalgaming,
There are two WordPress functions that you can run to activate and deactivate WordPress plugin, the link to read about them is shown below.
http://codex.wordpress.org/Function_Reference/activate_plugin
http://codex.wordpress.org/Function_Reference/deactivate_plugins.
You can combine this with wp cron that will run to activate/deactivate the plugin at a appointed time.
Why exactly do you need this?
Thank you for the response i will take a look when im back at my computer.
I have a plugin that i want to be active from the begining of december and stop just after christmas and i will be away at the begining of december and will bot be able to activate it
But note that the plugin has to be installed on the site for it to work.
Can help out with the code to make it work.
Cheers
if you could help with the coding that would be great. my coding skills are quite limited and I have never used wp cron before.