Hmmm so you all facing prob with the swap space. so you all want to use your RAM space for the swap partition then this is not for you.
i prefer using the harddisk space for this.so here we go:
you may need some tools for this make sure you have all these:
first of all delete the current swap partition using fdisk and creat a new with the size you want, change the partition type to linux swap.
save the configuration and run
#mkswap -c /dev/hdaX (Where X is the swap partition number you created)
replace the current swap partition entry with the new one, if you have created the swap partition in the same place as before and only reduced the size then this step is not required. It is only required if the new swap partition number is different from the earlier one.
Reboot the system.
man mkswap, swapon