Thanks Statt and Net time for helping me out. What I have done to restore my funds
1: Backup of the old wallet ( Data folder and Of Course I had my private keys )
2: I installed the new version of wallet from Trezar website and it automatically start syncing the blockchain to the latest block
3: I just copied my old wallet.dat file from backup and replaced it with new wallet.dat file in data folder.
Thats it. Its working great ....Thanks.