file transferring with different xp versions

hello, i have a home network, i have a computer on the network with xp home version installed, and a server with windows 2000 server installed on it, i have been able to transfer files back and forth. i have just added a machine that has windows xp professional, mapped and shared the folders i want to share. the problem is that i can transfer files from the xp professional computer to any other computer, but i cannot transfer any files to the machine, from the other computers on the network. it keeps saying access denied. i am logged on as the administrator on the xp home machine, and the folder i am trying to send files to on the xp professional machine is shared. i am unable to send files from the windows 2000 server machine either. is there a security setting in windows professional that i need to change to allow me to write files to a xp professional machine from a networked location?

 

Log to this page it has a lot of links to instructions to Windows Network Settings, and Sharing.

Link to: Windows Network - Installing & Sharing.