Setting Internet Explorer to use a Proxy:
Go to “Settings ==> Internet Options”. Click on the "Connections" tab:
Now find the section labeled “Choose settings if you need to configure a proxy server for a connection”, and click the "Settings" button next to the section.
A new window will open with a section labeled “Proxy Server”. Enter the IP address and the port number for your proxy as provided in the DTSLeech.com e-mail.
Hit "OK" and you are all set up!