Name that part...
 

Hoping someone can settle something of an argument for me.

What do you call the rubber sheath thats at the top of the drive shaft nearest the differential.

As seen below.
http://www.vtcar.com/update/cars/vscsub/v12_800.jpg

Thanks in advance.

um.....do you mean the cv joint boot?

Yes!!!

I was being told "it cannot be there only used on wheels that turn"

*goes to victory gloat*

These FWD brigade *rolls eyes*