Technology by Jacob Dybala

If you see this message the following should be done on the computer containing the shared files.

Download the following and install it: Windows Server 2003 Resource Kit Tools
http://www.microsoft.com/downloads/details.aspx?familyid=9d467a69-57ff-4ae7-96ee-b18c4790cffd&displaylang=en

After the installation is complete click on: Start | All Programs | Windows Resource Kit Tools | Command Shell

Then enter the following commands. (Attention: they are case sensitive)

net user guest /active:yes
ntrights +r SeNetworkLogonRight -u Guest
ntrights -r SeDenyNetworkLogonRight -u Guest

The first command enables network access for Guest account, the two subsequent ones change two different policies to  allow network access for Guest account.