laptop harddrive caddy

I bought an HP DV8110US and the 80gb hdd isnt going to last me long. Im going to get a 100gb one off ebay to add on it it. I just cant find a harddrive caddy for this laptop anywhere...
Any ideas??

Use the caddy from the 80 GB, or are you trying to add the 100 as a secondary HD?

i want to add another drive to it.