Problem with connecting MS access DB 2007 in windows 7

Question

Hello i am using MS Access 2007 for DB and in  connection string the provider is "Provider=Microsoft.ACE.OLEDB.12.0;". 

this is working fine in Windows XP and Vista but not working for windows 7. 

Please tell me the is there any changes in data provider or is there any setting for windows 7 specially.

Thanks in Advance 

not working means " Its doesnt connect with the Database".