Open a new workbook.

In Sheet1 you will enter your titles across the row in individual cells.

LastName  FirstName  Address  City  State  Zip (and whatever else you wish)

Last column title it Type

Now assuming John Doe has two addresses...one personal and one business.

Row 2 enter  Doe  John  123 main st.  Albany  NY  12345  enter a P in the Type
column

Row 3 enter  Doe  John  456 main st.  Albany  NY  67890  enter B in the Type
column.

Do this for each person in your list.  If it is a personal address enter a P

When you want to print mailing labels, do it through Word with Excel as the
data source.

You can filter or query on the P's and B's in the Type column.

For help on Word mail merge using Excel as the data source.

http://www.mvps.org/dmcritchie/excel/mailmerg.htm

http://www.mvps.org/word/FAQs/MailMerge/CreateAMailMerge.htm

http://www.mvps.org/word/FAQs/MailMerge/CreateADataSource.htm

And a training tutorial for creating envelopes and labels.

http://office.microsoft.com/training/training.aspx?AssetID=RC010390291033

Gord Dibben Excel MVP