Convert a column into a comma separated list

• Copy the column in Excel
• Open Word
• "Paste special" as text only
• Select the data in Word (the one that you need to convert to text separated with ,), press Ctrl-H (Find & replace)
• In "Find what" box type ^p
• In "Replace with" box type ,
• Select "Replace all"

http://superuser.com/questions/240858/convert-a-column-into-a-comma-separated-list