just select the option Keep gmail's copy in the inbox in the POP3 settings
dat way the mail will always be accessible from any number of clients 4 which u have configured the POP3 of d accn
I must say you have never used webmail services with POP3 settings.
Once message downloaded from POP3 it is never accessible by other mail client with POP3 settings. When I download message in mobile with POP3 settings, microsoft outlook or outlook express shows me there are no new message bcoz once new message are accessed by POP3 settings it leaves a stamp there in webmail.
Anyway Cool Buddy's suggestion is too cool. I am now accessing mail on mobile using IMAP settings & receiving same mail in mail client in computer with POP3 Settings.
Thanks Cool Buddy, you colved my problem.