http://server/reportserver?%2fFolder%2fMyReport&rs:Command=Render&Date=2009-06-01&MachineId=Machine1&MachineId=Machine2&MachineId=Machine3&MachineId=Machine4
Here we are passing more than one machine id to the MachineID parameter. Same way, you can do it using the & operator
Cheers,
Jason
P.S. : Please click the 'Mark as Answer' button if a post solves your problem! :)

