Sharing a connection between two boxes

I have only one ethernet port in my room, but two computers. If I get a second NIC for one of them, can I set it up such that the other computer can plug into that and act as if it was effectively plugged into the port?
Most of the tutorials out there seem to be about creating full-fledged routers, but I don't want anything as complex as that. I'd prefer to have both machines receive individual IPs from the campus DHCP server, rather than assigning one machine a local address.

Easiest since you'd need to purchase a new NIC anyway, would be to just get a switch. A router would give you even more options though, but a switch would be cheaper if your on a budget (10-20$ off ebay probably).

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    Sharing a shared network variable between two PC's connected to a network
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    Sorry lost all the formatting
    Surely this shouldn’t be so difficult! I have a little
    LabVIEW program running in the background of PC1. The exe’s task is to collect
    and send OPC variables held on a SCADA system and convert them to shared
    network variables (as I thought that they would be easy to share over a
    network, easier than the nasty OPC and DCOM issues). I have PC2 which runs
    measurement studio and I have created a nice test VB program which either
    writes or reads the network variables which are on PC1. The PC1 collection
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    I can see the network variable change on ‘NI Distributed System Manager’. I
    When I look at ‘NI Distributed System Manager’ on PC2 I can’t see PC1 on the
    list and when I use the basic measurement studio code below to read the network
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        Private
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    Private Sub TestVariable_Data_Updated(ByVal sender As
    System.Object, ByVal e As
    NationalInstruments.NetworkVariable.DataUpdatedEve​ntArgs(Of Double)) Handles
    TestVariable.DataUpdated
    TextBox1.Text = e.Data.GetValue
    End Sub
    End Class 

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    Edited by: 835435 on Jan 20, 2012 11:43 AM
    Edited by: 835435 on Jan 20, 2012 11:44 AM

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    >
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