Printing from Command Prompt

heya

I was wondering if anybody could help with a command line problem. Im tryign to print a .PS file to a virtual printer using the command line.

example
print /D:LPT1 File.PS

However, all this does is send the file to the print queue, then print queue says "printing" and nothing happens.

If i try to print the same file with the same printer in photoshop it works correctly. It has been suggested i may need to send an ascii code as an "End Of File" statement sort of thing, but i am unsure of how to do this.

Thanks for any help.