Ceertoo...Eccomi subito,
db.ConnectionString="DBQ=D:\SVILUPPO\Project\Voice _Mail\VM32CS\VMail\Svm.mdb;DefaultDir=D:\SVILUPPO\ Project\Voice_Mail\VM32CS\VMail;Driver={Microsoft Access Driver (*.mdb)};DriverId=25;FIL=MS Access;FILEDSN=D:\SVILUPPO\Project\Voice_Mail\VM32 CS\VMail\Svm.mdb.dsn;MaxBufferSize=2048;MaxScanRow s=8;PageTimeout=5;SafeTransactions=0;Threads=3;UID =admin;UserCommitSync=Yes;"

Che ne dici?