i might be able to help guide you (but I am not well versed in VB- C# is my forte) but I think it might be due to this line
comm.CommandType = System.Data.CommandType.StoredProcedure
when I set up similar situation I set it as
SqlCommand cmd = new SqlCommand("myStoredProc", conn);
cmd.CommandType = CommandType.StoredProcedure;
I don't know if adding the "System.Data." is causing it (and loooking at it I doubt it)... what is the error you are getting? is SQL crashing on you? or is just "nothing happening"
Have you tried it with a super simple proc that takes no params?
create proc usp_selectAll
select Name from tbl_YourTable
and then tried that? maybe the proc is messed up?
also if error is saying that it cannot find the proc have you literally gone in and clicked on the proc and clicked execute or modify or something with it?