mexopts.bat error while simulating model

I am using matlab 2009b version,& when i try to simulate model it gives me error as mentioned in the screenshot added. some mexopts.bat is required. I checked on net & found some solution but these were talking about version 2010a/b or so... based on the inputs from solutions on net, is it compulsory to have Visual studio 2008 & Microsoft SDK to simulate model? is there any work around for the same? FYI I am using windows 7 64 bit OS & matlab version is also 64bit the exact version is as follows

------------------------------------------------------------------------------------- MATLAB Version 7.9.0.529 (R2009b) MATLAB License Number: 678169 Operating System: Microsoft Windows Vista Version 6.1 (Build 7601: Service Pack 1) Java VM Version: Java 1.6.0_12-b04 with Sun Microsystems Inc. Java HotSpot™ 64-Bit Server VM mixed mode ------------------------------------------------------------------------------------- MATLAB Version 7.9 (R2009b) Simulink Version 7.4 (R2009b) Stateflow Version 7.4 (R2009b) -------------------------------------------------------------------------------------

 please suggest.