Normally, having the partition on another drive than the OS should help.
Do you really need to create a partition for that? No.
But I prefer to leave that tech being. I got instead 4GB with my Vista64 and lowered the Paging File to only 512Mb. With that amount of memory, the Paging file is not really used and RAM is much faster than swapping. RAM is so cheap anyway.
Now, when I quit my game, Vista is responsive right away. I can even shutdown like 5 seconds after I quit my game.