I have tried the new bitcoin miner and I find it very good. What you should do to install it on Windows is described here.
How to build and install
DiamantMiner requires the SDK for Java Version 6.0 or higher installed. You can download it from here:
You should checkout the DiamantMiner from the SVN repository. You could use Tourtoise SVN as SVN Client. You can get it from here:
# Non-members may check out a read-only working copy from the Project anonymously over HTTP using this info.
svn checkout http://diamantminer.googlecode.com/svn/trunk/ diamantminer-read-only
After the checkout go to the Project folder and there you will find executables folder where are the compiled for Windows 32 and 64 executables.
Or you just download them from here:
Just click on them and the install will start. Follow the Installation.
You can check with ‘list devices’ which devices on your Computer can be used for bitcoin mining and are they OpenCL capable devices.
For the latest Project News follow this Forum link.
Thats it. Happy Mining.