Port Replicators

I'm looking for suggestions on adding Parallel and serial ports to my Dell Inspiron E1505 Laptop. I would prefer 2 serial and 1 parallel ports for astrophoto work.

Any input would be welcome,

Dennis

My ABS gamer laptop already has a parallel port. I've not had any luck getting a USB-to-serial converter to work with it. Also I've always been concerned with using such an expensive unit outside with dew, wire tripping, etc. So my solution was to buy a clunky old IBM laptop from a friend for $100 and load an earlier version of TheSky and CCD soft on it. It works fine for telescope control and CCD image capture. I transfer the files to the other PC for processing, etc. I figure if the old clunker gets trashed in the field I'm not out any real money.

George N