Not a big deal. You need to at some point disconnect the DMX cable from the lighting console, and somewhere else, you need to connect the conventionals into the DMX chain, where-ever it is convenient to do so.
Another idea might be to have an Elation OptiBranch/4. Run your CompuLive into that, then you can do a cable run from one of the splits to your front lights, a second run to your rear lights, then a third run to your front truss and a fourth run to your back truss. Using the OptiBranch/4 is a smart move for a good many reasons, not just for this the topology I specified, but that's a good one too.
If your dimmer packs are DMX, these are just additional DMX devices. Without knowing the CompuWare product yet, I'm sure it has some similarities to MyDMX. Dimmer packs themselves you don't add into your universe, you simply tell Compulive what you're controlling(say, a generic ParCan for example) and it(CompuLive) will do the rest.
If you're running lights from FOH via CompuLive and the console, disconnect the console run, connect that to CompuLive. After the last dimmer pack(are these rack-mounted dimmers or truss-hung dimmers?), then start connecting your intels. Actually, the order doesn't really matter as long as in end all the fixtures end up on one chain.
This isn't really difficult. What's difficult is for you to figure out how to best get DMX to both your intels and your conventionals, and I think you're not going to have any issues with that now.