Generating a tlb file for a dll

I am having a DLL (Vdll_1.dll )written in c++ and now I have to create
a .tlb so that we can use this DLL in VB projects by adding reference
to it.

I added Vdll_1.def file and test.idl file to my project .
Vdll_1.DEF file as follows:
LIBRARY	"Vdll_1.dll"
EX****TS
	Calculate_1
----------------
Vdll_1.idl file as follows

im****t "oaidl.idl";
im****t "ocidl.idl";

[
	uuid(634FE8B5-C847-4b25-B135-B39312741EDE)
]

library Vdll_1Lib
{
	im****tlib("stdole2.tlb");
	[
		dllname("Vdll_1.dll")
	]
	module Vdll_1Mod
	{
		[
			entry("Calculate_1")
		]
		void Calculate_1 (void);
	}
};

I used #im****t "C:\Test\Vdll_1\Debug\Vdll_1.tlb" no_namespace  in my
client C++ project.

I was expecting to see two files Vdll_1.tlh and Vdll.tli after I
compile my client project but it shows only Vdll.tlh and therefore I am
getting linking error.

Any suggestions???

Why the tlb file is not generating the .tli file??

thanks

abhi