Insert a carriage return or line end into a multi line field

I need to insert a carriage return/line feed into a multi line field in Acrobat 8 Pro? For example: On a business card there might be a 2 line address that I want to concatenate from 2 fields (address 1 & address2) but have acrobat make the line end so that I can have consistent line spacing in my forms. The format might look like (address1 + CR + address2). The process occurs on my website when I populate the fields from a form using "Persits aspPDF". So the simplest question would be what character would create the carriage return? I tried inserting a \r but no success. Any ideas?