This actually wasn't too hard for me Lucas luckily ^_^
It's all done via the client.js file, located at /components/com_comment/joscomment/jscripts/client.js - at line number 389 or so, I inserted the following code:
if (form.tname.value == '')
{
alert("Please enter your Name");
return 0;
}
...and that's it! Tested and working! Obviously, this is English only and doesnt work on multi-language - it'd need about 3 file changes for multilanguage capability, then every language file would need to be updated with the new string....
Anyway, if you are using the public Beta 1 copy of !JoomlaComment, here is the modified file for you to use:
client.js
If you need support or help with JoomlaComment in future, please mention this thread in your new query so we know its a modified installation [just incase client.js needs to be edited, we will edit this one for you instead of the default one]. That can be easily done by pasting the link to this thread should you need assistance.
Hope it works well. Good luck and enjoy!