Outlook Express & Microsoft Outlook

Google it will give u million answers more than what u will get on forums

Outlook Express is free, Outlook is not free and is a part of M$ Office suite
Outlook Express is just a mail client whereas Outlook is a full fledged PIM (Personal Information Management) software

They both store mails in different way. For more use google/yahoo/twingine

i have both Outlook Express & Microsoft Outlook installed in my sys, rt now using Microsoft Outlook Express, is it possible to recieve email in both clients at the same time? , [just want to know which one is better, so that latter i can decide which one to continue with, i am using these mail clients to recive office mails, receive 10-20 mails Daily ]

Well, its a matter of opinion. I prefer Outlook Express some other prefer Outlook and there are some more who prefer some other mail client like Thunderbird, Evolution, Bat, KMail, etc. Don't relying completely on member reviews here, search the net for comparisons and you will know more.

But generally, you will find two sets of people One set of people will swear by OE/Outlook and the other set will swear at OE/Outlook.