First suggestion is that you will have better luck getting help with your own thread instead of tacked onto a Solved one.

I've started one for you here.
Please show for both PCs ...
Start, Run, CMD, OK to open a command prompt:
(For Vista or 7 type
CMD in the Search box after
Start)
Type the following command:
IPCONFIG /ALL
[Note that there is no space between the slash and ALL.]
Right click in the command window and choose
Select All, then hit
Enter.
Paste the results in a message here.
If necessary use a text file and removable media to copy the results to a computer with internet access.