Wednesday evening downloaded from the Crucial Website their Active X Control to check on my memory configuration. Thursday morning recieved an email giving me a run-down on my MOB, and recommended DIMM upgrades. I then ordered 2 x 512mb DIMM upgrades. Friday morning at 7.30am, postman delivered the upgrades. Installed them later that day and everything 100%. I had one query and rang their 0800 number, immediate reply and satisfactory answer. That is what I call service !!!!