How to run an application on target pc via network

"PsExec, from SysInternals, can do just this, providing you have the credentials to access the other computer.

Utilities like Telnet and remote
control programs like Symantec's PC
Anywhere let you execute programs on
remote systems, but they can be a pain
to set up and require that you install
client software on the remote systems
that you wish to access. PsExec is a
light-weight telnet-replacement that
lets you execute processes on other
systems, complete with full
interactivity for console
applications, without having to
manually install client software.
PsExec's most powerful uses include
launching interactive command-prompts
on remote systems and remote-enabling
tools like IpConfig that otherwise do
not have the ability to show
information about remote systems."