Need more info?
Why do you say you are the host? Are both computers going to the internet via wireless to the router or are you using ICS?
Both computers should just hook up to the router... and neither should be dependent of the other to get access to the internet.
If you ask for help from the forum, PLEASE take the time to let us know the results so we can all learn.
THE MICK
My system specs...
THE ES - 5,120 (640 8-way nodes) 500 MHz NEC CPUs. 8 GFLOPS per CPU (41 TFLOPS total). 2 GB (4 512 MB FPLRAM modules) per CPU (10 TB total) shared memory inside the node. 640 × 640 crossbar switch between the nodes with 16 GB/s inter-node bandwidth, using 20 kVA power consumption per node
The machine runs a version of the Super-UX UNIX-based OS. You mean it's not running Windows???