Josh, First, get a hub or a router. This will save you alot of aggrevation in the longrun.
Second, make sure you assign IP addresses to each machine. This will affect your internet connectivity so beware. (this is why I recommend a router)
once you ahve given each machine an IP (such as IP 192.168.1.100 and 192.168.1.101 with a subnet of 255.255.255.0) you need to be sure each machine can ping each other. you would do this by opening a command prompt (start, run type "cmd" (without he quotes) and press enter) At the prompt you need to ping the opposite machine (say its 192.168.1.100) So type (no quotes) "ping 192.168.1.100" you will get somthing that looks similar to this if you can see the machine:
Code:
C:\Documents and Settings\Administrator>ping 192.168.1.1
Pinging 192.168.1.1 with 32 bytes of data:
Reply from 192.168.1.1: bytes=32 time<1ms TTL=250
Reply from 192.168.1.1: bytes=32 time<1ms TTL=250
Reply from 192.168.1.1: bytes=32 time<1ms TTL=250
Reply from 192.168.1.1: bytes=32 time<1ms TTL=250
Ping statistics for 192.168.1.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
This is telling you that you can see the second machine. Try the reverse and see if the second machine can see the first machine.
If it fails.. It will look similar to this:
Code:
C:\Documents and Settings\Administrator>ping 192.168.1.100
Pinging 192.168.1.100 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 192.168.1.100:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
C:\Documents and Settings\Administrator>
Hope this gives you some sort of direction.
Beware that if you are not behind a router and connect to a WAN (lets say some sort of broadband connection such as cable or dsl) if you are not running a second NIC card you may have problems with putting in a custom IP address. This is because your ISP will assign you one either static or dynamic and if you disrupt that information, you will also disrupt your Internet access (unless of course you are running two nic cards in one machine)
Good Luck!