Yup, unfortunately the PCMCIA shares 4Mb of the 8Mb address space.
Either replace the SIMM with a 4Mb one , or buy an accelerator card
Edit:
Dunno if this'll work, but try setting the jumpers to 4Mb.
It'll save you having to get a 4Mb SIMM if it works, but you still loose 4 :-(
