Putting on new brake pads today and noticed on the drivers side that
the (whatever you call it, tie-rod?) had a busted boot and the grease
knuckles rubber was also busted.

This is the link that actually turns the left front wheel. Sorry I'm
don't have a clue what parts are called on front wheel drives. If we
were talking RWD it would be a tie-rod.

Anyway, can just the boot and the grease fitting rubber be replaced or
do I have to replace the entire link. I'm assuming I can replace the
boot on the inner part of the link but the outer part with the grease
fitting will have to be replaced?

Is this a do-it-yourself-er or do I need to take to someone?

I have a "fork" to break the outer joint loose but w/o further
inspection I couldn't really tell about the inner part. Looks like it
connected directly to the steering shaft.