PLEASE DISREGARD. PROBLEM SOLVED
Option to Add akonadi was there all along in Personal Info, only the button was totally white-out and invisible!!
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I installed openSuSE11.4 today and imported the address book (LDIF) exported from openSuSE11.2. All contacts are showing in KAddressbook afterwards in Personal Contacts but if I start a new message or try to forward an existing message the "To" field is blank with a "select button" to the right...I click on the "select button" and another box opens up offering me the following choices for address book:
All
Default Address Book
Distribution Lists
Recent Addressess
Selected Recipients

Regardless of which one I choose none of my contacts appear. If I manually type in an address and send the message, then when I select "To" in a new message,only that address appears in Recent Addresses. I have tried naming the exported address book "std.vcf" to replace the existing one in .kde4/share/apps/kabc/kabc/ but it did not make any difference.

Please help me solve this problem. Thanks very much in advance.

Would you mind sharing the solution to your problem to assist future users who run into the same issue?

From System Settings / Personal Information / KDE Resources
The problem was that the very first button (on top of "Remove" button) it has no text, but I clicked on it just the same
after selecting Contacts > Edit and format as vCard, from dropdown, then click on 'Use as Standard'
Also added akonadi-resource
http://users.on.net/dwhb1/SysSettings_PersonalInfo.png

It still didn't show when Personal Contacts was selected in Address Book, but selecting "All" or "akonadi-resource", the contacts are all there.
Hope this helps.