Automatic Logon to BEx

Hi Guru's

              Can any one solve my problem that i have created workbook and send it to user now user dont like to open workbook and then open bex tool bar and go for refresh. So by uisng VBA we can write code for Automatic logon i.e when opening the workbook it will automatically opens the BEx tool bar so it is more useful for users.

Please anybady across this type of problems send me the code and steps.

Thanks in Advance...

Jagadeesh.M