failing to successfully uninstall yousendit

Hello!

My MacBookPro 15-inch, Early 2011 has been running slow and I was trying to clean up some of the unnecessary software on my computer. One of the apps I wanted to delete was YouSendIt, I followed online instructions on how to successful unstall apps, but there is one process I cannot delete because it is apparently running: YouSendItOSAX.osax it is a Scripting addition (Intel) size is 189,424 bytes (193 KB on disk). Any suggestions?

Processor 2.2 GHz Intel Core i7

Memory 4 GB 1333 MHz DDR3

Graphics Intel HD Graphics 3000 384 MB

Software Mac OS X Lion 10.7.5 (11G63b)