Yes, have done two of these so far.
I guess that you have already been to the PCI DSS website and downloaded the assessment framework (now at version 3.0). Much of it is a direct match to some of the elements of ISO27001, whereas the key differences relate to specific technical controls which are not specifically highlighted by the 27k standard.
You also need to categorise your organisation into one of four levels, based around number of card transactions and values, which will determine the approach and resources you to need to become PCI DSS certified. At the top end you will need to engage an "ASV" - an external security scanner approved to highlight technical vulnerabilities, and a "QSA" - an external security assessor to come on-site and conduct the assessment.
Hope this helps ....