you have to install clients for microsoft and file and print sharing on both the machines.
try this and tell me what happens
go to DOS prompt from within windows on comp2 NEC
and at the prompt type
1. PING 127.0.0.1
If u get a result like this
then it means that tcp\ip is set up ok on that computer.
Do the same thing on the other computer also.
Then do this.
2. PING 184.108.40.206
you should get something
then go to the \\HP computer and type
and you should get the same reply
if not then u have to check your tcp\ip settings
unstall and reinstall tcp\ip.