Adding more ram to Feed-the-beast?

[OhhWorddd]

I need some help.
I Heard running more ram makes your Minecraft / Feed-the-beast alot faster but i don't know how to allocate more ram.
I tried going to options and then going to that scrolling thing but it can only be at 1 GB.
Can someone help me how to allocate more?

Thanks!
-Ohhworddd

 

[FavoriteFox]

Are you using 32 bit java perhaps?

 

[eable2]

You need to install 64-bit java, and then the slider will open up past 1 GB