I checked out Pimsleur "Quick and Simple" polish from my work library... similar to this, it is an audio based program... Units 1-5 are almost an exact copy of "quick and simple", but the remaining programs take you from there. I take the lessons on my drive to and from the office (lessons are usually ~30 minutes) and best done when alone in the car. The program teaches you phrases which you repeat (often) in the context of a conversation. My Husband is polish, and is amazed that just on lesson 8 I am able to have short conversations regarding country of orgin, language, directions, meals, etc. If speaking polish is your ultimate goal - this is the way! I have struggled with other programs (including rosetta stone), but am excited to complete all 30 of the available Pimsleur lessons. I highly recommend this series.
My Husband, born in Poland, is shocked by how much I have learned... cant wait to finish the series.