Make sure my offline Wallet is ok?
If you just want to check if your wallet/password is working, you can do so using the bigcoin-qt debug window. To open the window, select "Help" from the menu bar, and then "Debug Window". Once you open the debug window, you can type this:

walletpassphrase "your walletpassphrase here" 600


to unlock your wallet. If the command completes without an error, you wallet has been decrypted successfully. If you get an error, your wallet couldn't be decrypted. From that same console, you can type this:

listaddressgroupings


to see the addresses stored in the wallet. When you are finished, type this:

walletlock


to lock the wallet. You do not need to be on the internet to do this, so you could do it from your live cd. I also believe you can do this without having downloaded the block chain, but I haven't tested it so I'm not 100% sure. Additionally, the commands available from the debug window are listed here if there are other things you would like to check.