Microsoft OLE DB Provider for ODBC Drivers error '80004005'

[Microsoft][ODBC Microsoft Access Driver]General error Unable to open registry key 'Temporary (volatile) Jet DSN for process 0x540 Thread 0x308 DBC 0x1936014 Jet'.

E:\WWW.BOOKSELLERS.ORG.UK\SBF\MESSAGEBOARD\../../common.asp, line 88