Setup a HUB but comps dont see each other!?

[Siamese]

IT began wiht me using a Crossover cable to directly hook up my two computers. They were able to use NAT so both comps could see each other and were able to use the internet!

Ive now installed a HUB with Straight cables and they can both access the internet!
However they do not see each other on the LAN.

Anyone know how to fix this?

[iknowhardware]

There are many factors. One of them could be that you are still using the old cables or network setup issues.