I don't have several days to let Bitcoin-QT download the blockchain (while overheating/lagging my laptop).

I have tried Armory - which turns out to need a synched bitcoin-QT.

Tried Electrum - which can't import wallets.

Tried Multibit - which is supposed to import wallets but just gives me a long messy error when I do so.

Perhaps an Ebank can do it? I tried making an account on blockchain.info but it doesn't have what I'm looking for - the ability to upload a wallet.dat and have it available to spend. Has obscure options instead. I don't know what else can be trusted.

Anyone got a solution?