how can i stop my computer from going to idle mode after every 30 minutes if i'm not touching it?

In vista right click your battery icon and manually change you power settings

also

from xp right click your desktop

select properties ad click the screensaver tab

selct the time length

try this step with vista aswell

Power Settings in Control Panel.

If you're using Windows then go to Control Panel, then to Power Management and in the windows that opens choose "never" near "system on idle"

Right Click on your desktop and go to Properties/Personalize, once in properties, go to the screen saver tab and under the wait time change it to 120 minutes or something. Be advised tho, that leaving your computer screen without activity for longer periods reduces life of the screen.

Thanks

Right click on your screen of your computer and go to screen saver, and make the number of minutes till it goes on idle to like 3297390273 mins that will work

With windows 7 go to 'Control Panel' choose "Power options" then choose the power plan most suited to your needs. Then click on "Change Advanced Power Options" then select "Processor power management" there you will find "Processor disable idle" Change to "disable"

Start, Control Panel, Power Options, set everything to "never", press ok

click on control panal, click display, click screen saver, then under wait, put how many minutes that you do want

display settings, and look for screen saver tab, and... then click on power and where it says turn off moniter put never and your done