Blue, the difference between having to hire a professional or this being a DIY project depends on a few factors.
Firstly, Is your house higher in evelation than the street? If not, hire a professional. If so, read on.
Secondly, Is there a window in your basement? If not, hire a professional. If so, read on.
Thirdly, Is there a power outlet in relative close proximity to the sump? If not, yeah, yeah yeah....
If you meet all of this criteria, buy a sump pump at your local hardware store. They should be able to explain to you how to install it properly.
Some people are like Slinkys. Not really good for anything, but you just can't help but giggle when you see one tumble down the stairs.