Can anyone help me with a problem in printing envelopes in Picture It!?

I have Picture It! Publishing Platinum 2002 running under Windows XP, a Lexmark X83 printer, but the options for printing envelopes in Picture It! do not allow me to change the manual feeding to the left side of the printer (which I used to be able to do in Picture It! 98), I can only print (so Picture It! says) from the middle (portrait) which my paper feeder will not pick up, or landscape (which is too wide for my paper feeder). The other options are all grayed out.

I do not seem to be able to change the settings - anyone know how?

Any advice would be greatly appreciated.