Dawn 5, created by Boris Zakharin
Dawn works with the following programs:
* Becky! -- Known to work with versions 2.00.08, 2.21.03
* Corel WordPerfect Address Book 8.x
* Eudora -- Known to work with versions 3.0, 4.3, 5.0, 5.1, 5.2, 6.0, 6.2
* ExecMail / Simeon
* Forté Agent -- Known to work with version 4.0
* Internet Explorer / Outlook Express / Windows Address Book (WAB) 4.0 - 6.0 -- Known to
work with versions 4.0, 5.0, 5.5, and 6.0
* Juno 2.0 - 5.0 -- Known to work with versions 2.0.11, 4.3.09, 4.3.11, and 5.0.33
* Mozilla (Seamonkey) -- Known to work with versions 0.6, 0.7, 0.8, 0.9.2, 0.9.3, 0.9.7, 1.0,
1.2, 1.3, 1.6, 1.7
* Mozilla Thunderbird -- Known to work with version 1.0.2
* Netscape 3.0 - 7.1 -- Known to work with versions 3.0, 3.03, 4.0, 4.7, 4.78, 6.0, 6.01, 6.1,
6.2, 6.21, 7.0, 7.1 (Netscape 8 does not have an address book)
* MS Outlook 98 / 2000 / 2002 / 2003
* Opera -- Known to work with versions 5.1, 5.2, 6.0, 7.0, 7.23, 8.01, 8.02
* Palm support through Palm Desktop (read only) -- Known to work with versions 3.01, 4.0,
* Pegasus Mail -- Known to work with version 3.12b, 4.01, 4.12a, 4.21c, 4.51
* Pine (PC and UNIX) -- Mailing Lists not supported
* Other programs which can use/import/export LDAP/LDIF, vCard (VCF), Comma Separated
Value (CSV), plain text, one per line or comma separated formats or store addresses in a
text file suitable for extraction
http://mysite.verizon.net/zakharin/software/Dawn/
And finally if cost is not a problem here are a couple of commercial programs to do this type of conversion.
Aid4mail
http://www.aid4mail.com/
Transend
http://www.transend.com/
You might want to check out the converters available at the following site as well.
http://www.emailman.com/conversion/#mboxwin
Dawn 5, created by Boris Zakharin
Dawn works with the following programs:
    * Becky! -- Known to work with versions 2.00.08, 2.21.03
    * Corel WordPerfect Address Book 8.x
    * Eudora -- Known to work with versions 3.0, 4.3, 5.0, 5.1, 5.2, 6.0, 6.2
    * ExecMail / Simeon
    * Forté Agent -- Known to work with version 4.0
    * Internet Explorer / Outlook Express / Windows Address Book (WAB) 4.0 - 6.0 -- Known to
       work with versions 4.0, 5.0, 5.5, and 6.0
    * Juno 2.0 - 5.0 -- Known to work with versions 2.0.11, 4.3.09, 4.3.11, and 5.0.33
    * Mozilla (Seamonkey) -- Known to work with versions 0.6, 0.7, 0.8, 0.9.2, 0.9.3, 0.9.7, 1.0,
      1.2, 1.3, 1.6, 1.7
    * Mozilla Thunderbird -- Known to work with version 1.0.2
    * Netscape 3.0 - 7.1 -- Known to work with versions 3.0, 3.03, 4.0, 4.7, 4.78, 6.0, 6.01, 6.1,
       6.2, 6.21, 7.0, 7.1 (Netscape 8 does not have an address book)
    * MS Outlook 98 / 2000 / 2002 / 2003
    * Opera -- Known to work with versions 5.1, 5.2, 6.0, 7.0, 7.23, 8.01, 8.02
    * Palm support through Palm Desktop (read only) -- Known to work with versions 3.01, 4.0,
    * Pegasus Mail -- Known to work with version 3.12b, 4.01, 4.12a, 4.21c, 4.51
    * Pine (PC and UNIX) -- Mailing Lists not supported
    * Other programs which can use/import/export LDAP/LDIF, vCard (VCF), Comma Separated  
       Value (CSV), plain text, one per line or comma separated formats or store addresses in a
       text file suitable for extraction
    
http://mysite.verizon.net/zakharin/software/Dawn/
And finally if cost is not a problem here are a couple of commercial programs to do this  type of conversion.
Aid4mail
       http://www.aid4mail.com/
Transend
       http://www.transend.com/
You might want to check out the converters available at the following site as well.
       http://www.emailman.com/conversion/#mboxwin
