My experience?
To sum it up, wish I had cable, dsl, or wifi. You will never get the speed they promise. Uploading: most of the time it is slower than an 8k modem. Downloading: it is more like 100k to 150k. Never the 640k/120k they promise, trust me.
Right now I am cursing this thing again.
You can combine TV and Internet using a direcDUO.
You can find all the info you need here:
http://www.direcway.com/
You can also go here and just read the horrow stories:
http://www.dslreports.com/forum/sat