New/Old Post issue

Well, the time/date of posted messages still looks like it''s server-centric (which is good enough for me I guess ). I access this site from two locations. It''d be nice to be able to update the last visited time/date so that I could benefit from the red/yellow folders and the greyed out/colorized yin-yang thingies. It doesn''t have to get in the way, but would have to be moderately easily accessible. Thanks, JoeG