Simple! Just drag all of your .Package, .RAR, .ZIP, .SIM2SKIN and .SIM2PACK files onto the picture surface and Voilà, your downloads have gone where they are supposed to. (By default it is set to C:\Documents and Settings\Your Username\My Documents\EA Games\The Sims 2\Downloads) To change it, click on the button at the top left corner. Select Change Download Directory and set it to wherever your downloads go. You can also Drag & Drop links from a webpage and she'll work her magic.
This is probably the best feature. Lets say you plan on doing a lot of downloading. Just open the RoboMaid click on the button at the upper left and select Change Monitoring Directory. Select the place your files download to and your done! The RoboMaid will automatically process the downloaded files and place any .package, .SIM2PACK, and .SIM2SKIN files in your downloads folder. Make sure the Enable Monitoring Directory has a check next to it. You only have to do this on the first start-up. Your settings will be saved.