First of all, Yahoo! Go is a dog. I wish it worked better, but it is slow, slow, slow. I have given it time to update after the initial installation, but the app itself has a tendency to hang. It's just a resource hog. Plus, text input just sucks. It doesn't utilize any of the BBs built in auto selecting modes or SureType, and on the 7130 it's a real pain.
In my opinion, you can get more and better info simply by using wap sites and rss feeds. But I guess if you are tied to yahoo in one way or another it might be good.
Having said that, here is the direct download to the jad file for the 7130: http://download2.go.yahoo.com/softwa...&preselintl=us
You'll probably need the 320x240 res for the 8100, so visit Y! Go
from the BB browser and when you get to the "Download Now" link, scroll click and select send address and email it to yourself. You can then visit the link on your PC.