The stock 2MB of RAM just doesn't cut it anymore. You need more. Try Softhut, Amigakit, Vesalia, or eBay to find an trapdoor accelerator or RAM expansion.
If you're absolutely, 100% sure that a tiny bit of WHDLoad gaming is all you're going to do on the machine, a PCMCIA SRAM card could work as well. Might be slightly cheaper or easier to find. 4MB is the maximum size for one of those. Definitely not the recommended solution for a variety of reasons, but it'll do in a crisis.
