Crystal report data access problem,please help

Question

Hi all,
Could not upload the image(screen shot)

I get a logon failed error ... Details of error are:

Details:ADO error code:0x
Source:microsoft OLE DB provider for sql server
Description:[DBNETLIB]Connection open SQL server does not exist or access denied
SQL state:08001

Please help.. This problem occurs both for PUSH AND PULL METHOD IN CRYSTAL REPORTS

Looked a lot in net but none solved my problem. plzz help