Carey,
We use a setup with 3 computers.
One is on full-time capture duty...that's the person that really needs to pay attention in order to get the race loaded right away and also watch/capture the finish. As soon as a race finishes, it is immediately saved, and the next race is loaded. This person doesn't even bother to look at the picture. Down-time between heats is typically 15 seconds unless there is a problem of some sort.
The second computer is for evaluation. This person can evaluate races at his/her leisure, and there is no pressure if they get behind.
The third computer is the scoring computer. As my crew has gotten better, my scoring guy has now started to help evaluate races too if we get backlogged. This is handy at the end of a big meet if you are trying to figure out who is who in the 2 mile heats, but you still want printed results done right after the 4x4. This helped out a little last year because at the end of our county meet, we had to go through and completely re-evaluate a heat of the 800 and change results manually because the clerk changed up heats without telling us. One person was able to do that, while the other person was able to continue evaluating the remaining races. If clerks and starters understand what's going on and work with you, you should be able to fly through heats with no downtime coming from the timers.
Network setup is very simple if you are using static IP addresses for each computer. All you need is a simple network switch ($20 - $60) and ethernet cables. I'd recommend an 8-port switch to give you a little flexibility. There are plenty of good, inexpensive options at
http://www.newegg.com or at your local office supply store. If you are unfamiliar with how to setup IP addresses, follow the instructions in your finishlynx quick start guide.
I don't know if people have any bandwidth issues using a serial cable to send big lynx files to a second computer. With a standard 100MB network switch/cables, there should be no bottleneck. If your computers happen to have 1GB network cards, you can get a 10/100/1000 switch and Cat6 or Cat6A cables that are even faster.
Sample setup:
Capture computer: 192.168.0.5
Evaluating computer: 192.168.0.10
Scoring computer: 192.168.0.15
Your lynx camera will automatically set it's own IP address 1 number higher than the first computer you load up with the lynx software (192.168.0.6 in this case).
My setup will typically look something like this. It's a little more complicated, but the principle is the same:
Capture computer: static 192.168.05
Finishlynx camera: software assigned 192.168.06
Identilynx camera: software assigned 192.168.07
Evaluation computer: static 192.168.10
Scoring computer (laptop): 192.168.15 (ethernet adapter) & 192.168.16 (wireless adapter)
Networked Laser Printer: 192.168.0.20
Wireless access point at finishline: static 192.168.50
Wireless access point at pressbox: static 192.168.60
Probably too much information, but the short version is: get a network switch, plug in ethernet cables, manually set IP addresses, and you should be good to go.
For dual meets, we still use a 3 computer setup, but we also wait for the heat sheets to come up from the line. Then our evaluator will just line up the picture, get the time, then write them on the heat sheets. We post ALL the heat sheets up on a wall and visiting coaches can get all their kids FAT times. Our scorer will then manually enter times for the placers (and others only if time permits) into the scoring program. Then we can have printed results, at least for the scorers, as soon as the meet is finished. My scoring guy loves doing big meets since they are pre-seeded, and he doesn't have to manually enter all the results for races. Dual meets are more unpredictable, and thus more work in some ways.