Well, it's not off-topic if you're trying to do it with JAWS. JAWS is useless unless it's being used to do something else as it's whole reason for being.
Unfortunately, I no longer have any Windows 7 machines I have ready access to so I can't whip up a set of step-by-step instructions under the dialogs that get used in that version of Windows.
It's not complicated presuming that your WiFi itself is already configured, as all you'll do is select the WiFi network and enter the password and you're in.
If the WiFi is not configured, then things get significantly more complicated and whoever might be assisting you would need to know about what modem-router model you have in order to set up the WiFi itself.
Brian - Windows 10 Home, 64-Bit, Version 1803, Build 17134
A great deal of intelligence can be invested in ignorance when the need for illusion is deep.
~ Saul Bellow, To Jerusalem and Back