Are you saying that you are trying to transferDatabase from another Access db with a link to a PARADOX file? If this is the case, you must do the transferdatabase from the source file (PARADOX). I'm not sure that Access can handle it, I don't use PARADOX at all, you may want to change the path to the PARADOX db and then change the docmd to this:
DoCmd.TransferDatabase ACIMPORT, "PARADOX", "c:\projects\j1427\access\SSCSMirrorDataBlk.mdb", acTable, "BLOCKS", "BLOCKS", False
However, I'm thinking that Mile-O-Phile is right just import.
You could do in code also:
DoCmd.TransferText acImportDelim, "Create an import specification here", "Your Table Name", "Full Path Here", False/True (depending if the file has field names), ""