SalesForce integration with MODx?

How did everyone get on with their SalesForce integration. I've got a project where i need to link modx with a CRM, the CRM hasn't been confirmed yet but sales force is looking like a good solution so wondered how much work was involved and if it was straight forward enough integrate with MODx.

Undecided if I should sync the information with modx users and salesforce or as Susan mentioned pass user validation to sales force and set the SESSION.

Your thoughts and experiences with doing this would be much appreciated.

Salesforce Service Cloud allows you to engage with your customers through all channels.http://www.mannyats.com/services/salesforce/service-cloud/