I am fairly new to this message board. I just recently finished reading literally hundreds of messages on this website in what I believe to be in another section than under pets called canine bladder cancer. Here is the link.
http://www.cancercompass.com/message-board/message/all,1543,
If you cant reach it this way, then just google or search in your browser under canine bladder cancer and it should be one of the first few sites listed. Some of the post started back as far as 2005.
I encourage you to read some of the posts from the canine bladder cancer board. It will really help to understand what is going on and what different options there are. There are a lot of people who have gone through or are still going through this horrible situation and they all have ideas and methods that they have used (many quite successfull, many not unforturnately).
Unfortunately, this is not a battle that can be won, but there are things that can be done to make the time left better for you and for your dog.
I hope this message gets to you and that you can have some comfort in knowing that you are not alone.
Teresa (Porkys mom)