Hey Maya,
I have had similar problems, I'm looking for l337 t00ls to help me do my job. The only one I have found that does the job (in some ways) is DB Commander 2000 PRO (looking for better ones). It has a double window display so you can look at two tables at the same time. It can do importing by simply selecting the two tables and clicking on the inport transfer button. If the table you want to import the data too is not empty and you don't want append the data you can dump the data with a simple click of a button.
Importing from CSV's is a little harder, seem to be able to export to CSV but not import so I use MS Excel to edit the data and save it as a *.dbf (V) I then use DB Commander 2000 PRO to import it to a Paradox DB. just watch out that no data is lost in the process...
Hope this helps