Notes Client Upgrade from R5 to R6

Can anyone tell me the proper Notes Client upgrade procedure from R5 to R6?I tried to run setup of R6 Client directly in a computer which has R5. However, I found that all my personnal address book entries are gone after upgrade.

Please help.

Subject: Notes Client Upgrade from R5 to R6

Hi, read the RedBook → http://publib-b.boulder.ibm.com/Redbooks.nsf/RedbookAbstracts/sg246889.html?Open