Install both softwares
In the proxomitron go to headers....click on NEW and create something like this
After doing this successfully go to the file option and click on save.
In the privoxy, go to option......edit main configuration and a drop down box appears. CLICK on EDIT and go to find.....in the find search box type 8080. take note of this symbol ###
change the www.example.com to something like this
After this is done click on save.
go to firefox web browser and change the network settings as shown below
pls in your windows 8.1 go to settings...network....proxy and let it look like this
In your idm it should also be like this
please someone should try and give a feedback as soon as possible.