how to check and save Connection Duration on LAN

in VB6 i want to create a software in which i want to note down the time duration of any computer that will be connected to the NETwork plz help me in that

Here's search queries you need to use on google and planetsourcecode.com, after that you can piece together what you need.

ICMP ping (using ping.exe or the likes) - allows you to check if a remote IP is online.

Timers and arrays of objects... you need to learn to use arrays of objects mostly, since you want to time multiple systems.

i have made quite a big chat program before and how you could do yours is a much simpler way...

Checking if the computer is there:
set a timer so when the computer connects to the server the timer is activated, do this by having another timer that gets the winsock state and if its connected (7) then start the other timer so ud have sumthin like

Private sub_tcheck

txt_ping.text = wsk_connect.state ' this makes the numeric representation of the winsock state go in the text box
if txtping.text = "7" then ' if the text box then displays 7 (which is conneted) then the timer to check if the server is there is activated
tcheck.enabled = false
tping.enabled = true ' this is the timer that will check the server is there
else
msgbox "unabled to connect"
end if
end

and in the tping timer you would have sumthin like

private sub tping
on error goto serverend:
wsk_connect.senddata "" 'so when winsock cannot send data obveosly the server has shut down so this will cause an error and when it does it will go to 'serverend:' and display the message
serverend:
msgbox "server has shut down"
end