Bruce, I can up-grade to 1024 MB RAM, although HP says I can go to 1.5gb RAM. <A HREF="http://h20015.www2.hp.com/en/document.jhtml?lc=en&docName=bph07293#P25_633" target="_new">http://h20015.www2.hp.com/en/document.jhtml?lc=en&docName=bph07293#P25_633</A> HP was very helpful, althought they didn't mentioned what P4 I could up-grade to. I take back what I said about HP in an ealier post, but I'm still not happy about how their "recovery" software is set up. After the up-grades, this should last me for a while (at least through 2004, I think).