Batch file needed !!!

I need a batch file. any guru’s out there?
What I need is a file that checks a condition, in true – exits, false copys a shortcut (stored on server) to the users desktop.

So, something like this…

if xxx.xxx exists (on the desktop) then end
else xxx.xxx doesnot exist, then copy xxx.xxx from \\server\share to desktop
end

Thanks in advance….