Hey re-read your post and I believe I know what is happening. Basically everything revolves around the Dell (All the headaches) . And you are using the Dell as a gateway/router. If this is this case you are not forming a sub network it is a private network. To tell for sure post the IP and subnet address of Nic 1 & 2 of the Dell machine, but I pretty much guarantee this is whatís up, from what you have described.
What you can do is take the cable that is your corporate/internet plug that into the switch and take the Dellís Nic 1 and plug that into the switch as for Nic 2 remove the cable not needed. Re-boot everything that is on the switch so it can pick up new IP addresses.
Warning you have not really described your corporate network. So you might need a cable with a reverse pair. (which is no big deal) shortest is best and get straight through adapter. Your local computer place should have this stuff or even Radio Shack.
The above will not affect your PCAnywhere after it is up and running with IP addresses donít forget also your camera is going to have a new IP address.