Trying to help out a friend who just got a hand-me-down Dell Latitude CPT notebook. The person who gave it to him did a fresh install of XP on it before he passed it along. The laptop only had 64 MB or memory, so he bought two 256 MB dimms. When he put them in and booted up, bios reported only 320 MB of memory. According to the specs on this model, it should be able to handle 512 MB, so I'm not sure what the problem is. Any ideas? Thanks in advance for any troubleshooting tips you can pass along.