Did you get any error messages when applying the patch? Also, make sure that the web server has read priveleges on the patched files; the patch tool often changes file permissions. If you check your server log, you may find a PHP error message with more details on the problem. (Generally a blank page indicates that a PHP error has been sent to the log file.)
To get the CVS version, follow the instructions in docs/README-CVS; there are many free and/or open-source GUI tools available for CVS, including TortoiseCVS for Windows.
Open Journal Systems Team
Don't miss the First International PKP Scholarly Publishing Conference
July 11 - 13, 2007, Vancouver, BC, Canada