Hi,
For a serial port check
http://www.aircables.net/products.html for their bluetooth to serial modules.
Their two modules:
1)
AIRcable Serial3
2)
AIRcable Serial3X
will connect with any bluetooth enabled laptop, desktop or even handheld pc through a virtual serial port.
If your laptop does not have Bluetooth integrated you can always buy a usb bluetooth dongle for just $5 -20. I've got mine for $4 on ebay.
I am using
AIRcable Serial3X and it works excellent with EQDIR interface(direct connection to EQ mount) or when it's connected to a SynScan remote control. It also has a built in rechargeable battery. That's the only difference between Serial 3X and Serial 3.
Sorry, cannot help with parallel connection. It seems that the only option here is to buy a PCMCIA to parallel card.
cheers,
Michael