Okay, I figured out the logic of when this happens. Whenever the Vendor name contains a comma, it screws up my expression and adds in the double quotes.

Also, what I was trying to do is wrap REPLACE around that whole thing of code above.

I tried the following, and none worked:

REPLACE(Fields!Name.value,"\","")

REPLACE(Fields!Name.value,"\\","")

REPLACE(Fields!Name.value,chr(34),"")