Hi, Carenjean. You've come to the right place to post your question. I'll take a stab at answering it and others will chime in if I've left something out or given you some bad advice.
Playboy is one of my favorite roses. It's a vigorous rose with a cheerful appearance and it's one of the few roses in my garden that never gets black spot. We have lots of photos of it in our database.
Rose (Rosa 'Playboy')
You don't say how large the containers are. If it's a 5-gallon container and if you were in a warmer zone, I'd advise you to keep the roses in the containers until the weather cools down. July is a bad time to plant anything, but you're in a cold zone, so you'll want your roses to develop a good root system underground before the cold weather sets in. I'd therefore advise you to plant the roses in the ground now. Wait until a cool day or the evening of a hot day and dig a large hole for each rose in a sunny area of your garden. Ideally, the hole should be at least twice as big as the root system. Amend your soil if necessary. This means you should mix the soil you removed from the hole with some compost, some potting soil, and a small handful of bone meal.
Remove the rose from the container and check the roots. If the rose has been growing in the container too long, the roots will be circling the pot and can get bound together in a ball. If this has happened, tease the roots apart to free them from the ball shape. Plant the rose slightly deeper in the hole than it was growing in the pot. When you replace the soil, be sure to pack it down firmly so that there aren't any air pockets. Water the newly planted roses thoroughly. Be sure to keep the new plants watered well for the next few weeks. Keeping the roots from drying out should be your main concern after planting. It would also be a good idea to use some sort of shade structure (maybe just a large piece of cardboard held in place by garden stakes) to shade the roses in the heat of the day for the first couple of weeks after planting.
I wouldn't cut the roses back before planting unless the tops of the canes look crispy. In that case, you could cut just an inch or two off the tops of the canes. You say the bushes are "sick looking," but please resist the urge to apply any fertilizer to them at this time. They're probably experiencing stress from living in a container in a big box store, where they might not get watered often enough or might get watered too often and not have good drainage. Roses under stress should not be fertilized. You can worry about fertilizer later.
Something else you can worry about later is winter protection. You're in zone 5 and the rose is winter-hardy to zone 6, so you'll need to take some precautions to keep it alive over the winter. I'm in zone 9, so I'll let someone in a cooler zone give you wintering advice.
