do you have a router
how many ports does it have?
how many ppl there will be wireless ?
will the router support the wired connections ?
also a router has dhcp
peer to peer with win xp
professional or home version ?
basically you need to have the same workgroup name, share a folder and put ppl you want to access the share in the "share permissions" and the "security" folder. The only way in p2p to get the other ppl on a specific pc to add their account is to have that account ALSO on the pc along with the local account, if not everytime you click on a share across the network you will have to type in the user name and password of an account on that pc. So to do it right >>> there is pc A B C with A logon mike , B logon pam, C logon jorge. So that means A needs logon accounts pam and jorge, B needs accounts logons mike and jorge, C needs mike and pam. You can see that this could get very combersome with more then 10 work stations.
If you have xp professional, turn off simple file sharing
open windows explorer ( not ie ) click tools / folder options, then view tab
scroll down to and uncheck "use simple file" , while you are there click the radio button show hidden file s and folders and uncheck do not show file extensions for known file types..or what ever, you want to show file extensions.
Tell me if you have home ver, slighly different networking