How do I export my contacts in Outlook 2011 for Mac to my Outlook 2010 for windows?

When I export contacts from Mac Outlook 2011, I can only export a text file for the windows version. When I try to import the txt file into my Office 2010 for Windows using the Tab Separated values for windows option to my contacts folder, nothing shows up in the folder even though it looks like it is importing the data. Is there another option?

Thanks Don