Retreiving deleted contacts?

Hi Guys!

I am just desperate. I synced my Nokia 6300 with Address Book and all about 450 contacts were transferred successfully. I used the iSync. In the meantime, I added some 50 more contacts to my cell phone Contacts and wanted to sync them with address book as well. So, I deleted all the existing 450 contacts from the Address Book on my Mac, hoping the next time I sync cellphone with computer, only the new 50 contacts will be transferred to Address Book. Here is what I ended up with: Address Book with only 50 new contacts and CELL PHONE with only 50 SAME contacts! Is there any way I can get those contacts back? All of the previous 450 contacts just disappeared from my cell phone! Just like that! I was wondering if there is any chance I can retrieve my contacts, it does not matter where to...either cell phone or Address Book on my Mac. Btw, I am using Leopard 10.5.8 and I have searched all over the web, everybody is mentioning some AddressBook.data.previous file but I cannot find it anywhere! I even created Automator ShowAllFiles Finder Plug in, the Addressbook.data.pevious just is not there.

Is there any hope for my contacts or should I try to do something?


ANY HELP IS GREATLY APPRECIATED!

Thank you so much in advance,
Matt