SR-40 Folks, The things I learned by doing the installation incorrectly may be of help to others. Especially those of us who are not software/hardware technicians and engineers. If your computer is running with a current acceptable operating system, utilities and associated hardware, then here's what worked with my XP Pro system. You will need to know how to create folders, extract (unzip), locate and run the software much like any other application you would install. (I use MS Explorer to create folders and move files.) The following are two install options -- Indirect Extraction Method: 1. Download the PowerSDR v1.4.4 software into temp folder 1 as described in the SR-40 manual or AmQRP SR-40 website. Extract the files into the same folder/directory. You should see three files. 2. Download the SD-40 overlay software into a separate temp folder 2 and extract it into the same folder. You should see two files -- . 3. From temp folder 1 where PowerSDR was extracted, run Setup.exe. This will install all of the files for PowerSDR v1.4.4. You should see a shortcut icon on your desktop. The files are installed into the "C:\Program Files\Flex Radio\PowerSDR v1.4.4" folder. 4. Locate and open the above PowerSDR folder. 5. Copy the two files from temp folder 2 into this folder. The SD-40 version will replace or overwrite the PowerSDR.exe file previously installed. You should now be able to run the software from the PowerSDR icon on your desktop. Direct Extraction Method: 1. Download the PowerSDR v1.4.4 software into temp folder 1 as described in the SR-40 manual. Extract the files into the same folder/directory. You should see three files. 2. Download the SD-40 overlay software into a separate temp folder 2. 3. From temp folder 1 where PowerSDR was extracted, run Setup.exe. This will install all of the files for PowerSDR v1.4.4. You should see a shortcut icon on your desktop. The files are installed into the "C:\Program Files\Flex Radio\PowerSDR v1.4.4" folder. 4. Open temp folder 2 and extract the files directly to the path shown above. You should be able to browse to this path from your extraction program. This step will overwrite the PowerSDR.exe file and add a .dll file to the folder (total of 15 files now.) You should now be able to run the software from the PowerSDR v1.4.4 icon on your desktop. Refer to the SD-40 manual to continue. Worked for me -- hope it does for you too. Chuck Carpenter, W5USJ, Point, TX -|- Rains Co. -|- EM22cv -|- 72 es50 years -|- 19 - K2OFN and 31 - W5USJ -|- Most fun = QRP since 1984. www.w5usj.com hosted by Hamnutz.com -|- NeTxQRP www.netxqrp.com