Antoni,
The SSIS packages are not dependent on the bitness of the machine.
Also most of the CozyRoc components work both in 32bit and 64bit mode.
Some of the bulk-load components require 32bit mode execution because
the required drivers are only available in 32bit mode.
Make sure you have installed SSIS+ 2008 for 64bit machines. There are
different installations for 32bit and 64bit .