I bought two wireless lan pci adapters asus wl-138g i was told this is all i need to allow my kids computer to access mine and be able to use the internet,when i try to access a computer from another i get a error message saying access denied you might not have permission contact your administrator,a friend told me that both my cards might be recievers only. any ideas thanks in advance.
You may find that your firewalls are blocking the connection. Are you using the XP firewall or some other software? If this is the case, you will have to create rules to allow the 2 PCs to access each other.
If I'm barking up the wrong tree, try these guides for setting up your network and sharing access to the intenet. The first one looks most straightforward.