HP Officejet Pro L7780 - Network Letter Nightmare!

Hello.
I'm hopin somebody can help with a problem I am having with my HP Officejet Pro L7780:
The printer is connected to my wireless network and all is well with this. The problem lies with the network letter that  it assigns itself to on my PC (Windows 7 Ultimate) for the in-built card reader on the printer. It is using the same letter as a virtual cd-rom drive on my PC - and I would like to move the letter the printer uses - and not the cd-rom drive, as I have my PC setup in a way where different types of drives are grouped together. Is there some way (possibly through the Windows registry) that would allow me to change the letter of the network drive (as it seems to automatically assgn one) and keep it using that new letter rather than interfering with the cd-rom drive and denying access to it every time Windows 7 boots?
Or alternatively disabling the card reader function on the printer as I don't use it?
Thanks to anybody who can solve this - as it is driving me mad!
This question was solved.
View Solution.

I finally found a solution to this problem that works for me.
I too have an HP printer that was mapping its memory card slots to a Z: drive every time I booted my Windows 7 computer.
To change the mapping to another letter to free up the Z: letter, I placed a memory card into one of the printer memory card slots. I then disconnected the Z: drive from the printer mapping (right click the Z: drive in Windows Explorer and choose the Disconnect option).
I then used the "Map network drive " option on Windows Explorer toolbar to map the printer memory card slot to another drive letter. You have to know the network address (or name) for the printer to do this:   \\[printer network address or name]\memory_card (e.g.: \\192.168.1.108\memory_card). This address goes in the "Folder" textbox of the Map dialog window. Make sure the "Reconnect at logon" option is checked. And make sure you select a new drive letter that won't be needed for anything else later. Then click "Finish."
After I did this, the printer has continued to use the new drive letter at boot-up instead of Z:, leaving Z: free for other applications.
I don't think the above works if there is no memory card in one of the printer memory card slot.

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