I found a very useful website http://www.txf-express.com/ which offers online service and downloadable software for converting stock trade data to TXF file. You can then import the txf file to TurboTax. Their service and tools are simple to use. The price is reasonable, as low as 3 bucks. Give it a try and I bet you won't regret. For day traders, you can use their software TXF Creator to combine your daily trades.