keygrip
you might as well switch it off. it's only a nuisance and usually places the file somewhere in your documents folder which you may forget about if you rebuild the PC.
easiest thing to do is create separate personal folders. one for work, one for personal etc. you can password protect whichever ones you want as well and store them wherever you want.
then it's just a case of sorting and filing into the proper PST files. keep the last email of conversations, create as many folders and create proper folder structures and above all keep on top of your mail filing, there aren't many things much worse than helping people who have huge mailboxes (this comes from users having 15gb mailboxes on our mail server - but we don't allow people to use PSTs at work).
A