Iphone

I know this is going to sound really crass or rude but I mean it politely. Don't use Lexmark printers they are really crappy. I have seen problematic lexmark printers my entire history in computers. They always have one issue or another which is why they are typically "giveaway" printers that they throw in when you buy prebuilt system. I know this doesn't solve your problem and I don't expect points for it. I'm just trying to give some solid advice from personal experience. Stay away from lexmark in the future. You'll thank me.

Iphone

if you have shared drive on the pc's try mapping a drive to them.

On XP
From Windows Explorer
Tools menu
Map network drive
in the folder box type \\<computername>\<shared folder>
where <computername> = the remote computer name
and <shared folder> = the shared folder

Vista will do some thing very similar.

or go to the command prompt and type:
net use * \\<computername>\<shared folder>

this will also map a drive letter to the shared folder