Adding attributes to customer entity

[mcad_mcsd]

my current goal is to add a new customer attribute (with \[code\]int\[/code\] type) which should appear as select with predefined options (loaded from a model with entries editable in backend, which is done).I'm struggling with proper use of \[code\]$installer->addAttribute()\[/code\] method, especially specifying correct source option. Other problem is the new attribute isn't saved to eav_entity_attribute tableI'm on Magento CE 1.5.1.0