Problem Saving Decimals

I want to save a decimal in my sql table. It's an hourly rate. I have my field as smallmoney type. I am updating the table using a sp from my web page. It always rounds my entry up eg 3.75 becomes 4.00. Heres my sp and the line where I am passing the parameter to the sp.

CREATE PROCEDURE spRB_AmendRoomData

@strRoomId int,
@strRoomRef nvarchar (50),
@strFloor nvarchar (50),
@strZone nvarchar(10),
@strLocation nvarchar (100),
@strType nvarchar(50),
@strNo int,
@strDirections nvarchar(2000),
@strPhoneNo nvarchar (50),
@strMaxNo int,
@strEquipmentFac nvarchar(2000),
@strNotes nvarchar(2000),
@strCharge smallmoney,
@strNotInUse bit,
@strIntExt nvarchar(20)


AS
BEGIN
UPDATE tblRB_Rooms SET

RM_RoomRef=@strRoomRef,
RM_Floor=@strFloor,
RM_Zone=@strZone,
RM_Location=@strLocation,
RM_Type=@strType,
RM_No=@strNo,
RM_Directions=@strDirections,
RM_PhoneNo=@strPhoneNo,
RM_MaxNo=@strMaxNo,
RM_Equipment_Facilities=@strEquipmentFac,
RM_Notes=@strNotes,
RM_Charge=@strCharge,
RM_NotInUse=@strNotInUse,
RM_IntExt=@strIntExt


WHERE
RM_RoomId = @strRoomid

END
GO


Cmd.Parameters.Add(New SqlParameter("@strCharge", Me.txtCharge.Text))

Thanks for any help