Thanks for the help from you both. We don't use the CMS console to add drivers. We also don't push it to any package/site servers. We use a deployment server only, and boot to USB or CD with WinPE 4.0 on the client machines and push images directly from the Deployment Server.
So basically, I'm adding the driver by opening Deployment Console on the Deployment server -- click tools -- boot disk creator -- Select the WinPE configuration -- right click on the configuration and select edit configuration
On the second step of this process I can add Windows PE Hardware Device Drivers, which is where I've uploaded several to try out. Then, I create a new boot image .iso file that I put on USB. We haven't updated to Deployment 7.x, but we run ITMS 7.1 SP2.
I've tried adding the storage drivers the same way, with no luck. However, there are a TON of chipset drivers to choose from, so haven't decided how to tackle adding them quite yet.