Adding a PCMCIA card is easy to your laptop is easy! Just follow these steps:
Most laptops come with Type II and III. Older laptops come with Type I. Check your manual for further instruction.
Most PCMCIA cards are Type II. Generally only the hard drives are Type III.
Remember a Type I will go in any slot, Type II in a Type II or III slot, and Type III in a Type III slot.
Note that most newer PCMCIA cards are hot swappable which means you can unplug and plug in these cards when your laptop is running. Check your PCMCIA's manual for further information.
Now, that was easy, wasn't it?