You can never have enough memory in your PC.  Many computer stores will offer PC packages with just the basic amount of memory needed to run the PC.

It is always best to get as much as you can afford.   No fooling.  it is better to have too much memory than not enough or just enough.  You'll be surprised at the performance improvement 32Mb of add-on memory will provide you.

There are several types of memory configurations on the market today.  You local PC supplier can provide you with whatever you need.

The Ultimate Memory Guide is a very good starting point to find out more about the memory for a PC.

The picture below shows a 32Mb PC100 SDRAM memory module.   This PC has 4 slots in which memory can be added.  Each PC is a bit different.  Consult your manual for the exact type and configuration for your PC.