To over come this kind of problem Make sure you Download the software during off peak hours when Internet traffic is low. A download accelerator such as DAP from CNet can also help by speeding up the download process, automatically resuming failed downloads and starting the download automatically at any scheduled time.
Alternatively, some companies can mail a copy of the demo CD-ROM to you. To order the Trial Version on CD-ROM email a request with your address to the concerned company.Source at Appointment Scheduling Software