Well here is my problem:
I have recently installed a game onto my pc, now when I run the game it always asks for an admin password (The PC's admin), since the admin for the pc is my mum I have to ask her to enter her password so that I can play, the problem is my mum isn't here for a very long time each day so is there any way I can stop the pc from constantly asking me for the password?

Also I'm using vista if that helps

Well, I'm thinking your best bet is to make a shortcut to the game on the desktop (if it isn't there already), and set that to always run in admin mode.
Here's how-
Right-click the shortcut.
Click Properties, and then select the Compatibility tab.
Under Privilege Level, select Run this program as an administrator, and then click OK.

That should work for you, but if not let me know as there is another way to do it.

Thanks, ok I've tried that but the "run program as an administrator button is unclickable" any ideas on how to get it clickable?

Sorry, forgot that you need admin access to tick that.

Two things you can try-
One-
There should be a button called "Show settings for all users".
If you click that (you'll probally need your mums help for the password) it will elevate the shortcut settings so you can edit the global settings on the shortcut.
The new box should show you the same things as the other one, but these are the settings for all users.
Just go to Privilege Level on that box, select Run this program as an administrator, and then click OK.
Then see if the first run program checkbox is clickable, if so click it then click ok again.
If not click ok anyways and try the game.

Two-
Ask your mum to go into her desktop account.
Browse to the games executable file.
Right-click the file.
Do the same as above.

I havnt used "user" accounts for a while as I'm admin on my PC, so I'm little rusty