There are lots of small steps involved. It's not too difficult but to list the details of each and every one for both XP and Vista would require the rest of my weekend! :) The steps also depend on which service pack you have installed for XP, etc. Your particular firewall may also require additional setup. This is probably why nobody has responded yet as it can be very easy, or be a real pain requiring lots of patience by those helping and yourself. Also, you have basically asked for a few things to be done (ie. share printer, share a folder, add to Fahmon, all in two different OSes).
Basically:
Step 1: All computers need to be placed in the same "Workgroup". Each computer in the Workgroup need a different name (ie. "desktop", "laptop", in the workgroup "mynetwork". You can access these options by right clicking on "My Computer" in both XP and Vista. You will need to reboot.
Step 2: Turn on "File and Printer" sharing. You can accomplish this in XP by running the "Network Setup Wizard" in XP. In Vista, go to Control panel and go to "Network and Sharing Center" and turn on Network Discovery, File Sharing, Printer Sharing, and Media Sharing.
Step 3: Go to Start Menu, Printers, and then right click on your printer, select "Sharing" and check to see if your printer is shared. If not select the "Sharing" checkbox and take note of the name.
Step 4: Go to another computer (ie. your wireless laptop) and go to "Printers", and then "Add Printer" and then "Add Network/Wireless Printer" in Vista, or click the browse ison in XP and you will see "Network" or something similar. Browse until you see the printer. Select it and then follow the prompts to install.
Sharing a Folder (ie. your FaH folder)
Step 1: Navigate to your FaH folder. the location can be in a few places. Some hints on this location can be found here:
http://www.hardwarecanucks.com/forum...-progress.html
Step 2: Right-click on the folder, select "Sharing". Select "Share this folder".
Step 3: From FaHmon, follow the directions to add a client in the post I linked to above. When you browse to the folder to add, click on "Network", and you should be able to see the folder you shared in step 2. Select it.
These are the bacic steps. It is not the detailed step by step guide you asked for, but is the basic overall procedure. If it does not work, start by checking for typos, wireless connectivity, etc. Then, turn off any firewalls (including Windows firewall), antiviruses, etc. Windows should configure its own firewall if you use the wizards I mentioned, but sometimes it does not.
Hope this helps you a bit. Again, to do what you asked in a very specific manner would take a bit of time which I don't have now so good luck. You should try it though...once you do it its not too bad.