Outlook 98 Out of Memory Error

I created a contact in Outlook 98 and I wanted to attach a journal entry to it. I double clicked the contact and clicked the Journal tab, and at the bottom of the screen clicked New Journal Entry. My computer told me that I was out of free memory and could not complete this task. My pc has 3/4 gig hard drive space left, 96 mb of ram, and has a first generation P200 processor.