You will get a Window open that allows you to select a wallet file. You should be able to see the "multibit-data" folder... double click that... and then double click the "wallet-backup" folder. You should see your backup files.
Select the one from the date before your bitcoins disappeared and then click open. This should open your wallet backup and you should be able to see your coins (assuming they have not been hacked/stolen).
Ok I did all that it is in word pad. I changed format
it says.
multibit.info,1walletVersion,3
receive, 1L6_____________
receive,1Ko_____________,bitcoins%40byex.com
rec__________
rec_________________get%20free%20money
Rec__________________
Rec_________________
property,walletDescription,your%20wallet%20description
pro______________________________
pro_________________________________
property,receiveaddress,______________________
I put blanks for the addresses.
How do I get this back in my wallet?