WNAD Error

WIN98, 64Ram
Started computer and opened Lotus Notes. When reading first email, crashed with window message:

Wnad
Program has performed an illegal operation…

WNAD caused an invalid page fault in module unknown at 00de:0000000.

After closing error message window and Lotus Notes, error message window
read:

Application Error
Exception EAccess Violation in module WNAD.EXE @ 00028D26
Access violation at address 00428D26 in module WNAD.EXE read of address 010AEED0.

Has anyone seen this??