Alrighty, I'm going to do a really quick explanation and try to let people who aren't so tech savvy know how this works:
You need to find that thread above and download the SDK stuff, it will be in a zip file that you'll need to extract. For this to work as easily as possible, you'll want to rename that extracted file that holds all the contents to something shorter, for example "android-sdk". After you do that, open up My Computer, click on your C: drive, and drop it right in there, in the open.
Next you'll want to activate the debug mode on your phone. Do that by going to Settings -> Applications -> Development on your phone, and make sure that USB Debugging option is CHECKED. After it is, plug it into your computer via USB, and let it install itself. Your computer may ask you to restart, if it does, do it. It's necessary to make this work.
Once you're all set, you should be able to make a log. What you do is click Start Menu -> Run to open up a command prompt. This is where you'll be giving the SDK software you downloaded the command to create the log. In order to get your command prompt into the right folder, you have to change the directory it's looking at. If you dropped the "android-sdk" folder into your C: drive, you'll need to type "cd C:\android-sdk\tools" into your command prompt. If you did it correctly, you'll see the text in your command prompt change to show that file path, and the blinking cursor should be right after it.
NOW you're in the right place, and you can give the command to start creating a log. Type "adb logcat > logcat_accept.txt" BEFORE you accept the update to your phone, and hit enter. Type it with spaces included, exactly as you see it above. After you hit enter, accept the update and let your phone do its thing. Once your phone reboots after installing the update, your command prompt should change, and be ready to accept more commands. If it doesn't, you simply press "ctrl+C" on your keyboard to stop running the last command you entered. Once that is done, your log has been created.
To find this log, simply open up your C: drive in explorer, find your "android-SDK" folder, open the "tools" folder, and find the text file labeled "logcat_accept.txt". This is your log. Inside this file, should be the http address of where the download came from. This is what everyone is looking for.