How do you change the rear struts in my 95 Olds Cutlass supreme? Is this something I could do myself or would I be better off taking it to a mechanaic?

Many of the 95 Cutlass Supremes have a transverse leaf spring suspension on the rear and there are no coil springs. I believe it depends on whether it is a 2 door or 4 door model. It is much easier to do the struts on the transverse leaf spring type. Support the knuckle with a jack or jack stand. Unbolt the upper mounting bracket by removing 2 bolts from inside the wheel well. Then remove the 2 bolts holding the bottom of the strut to the knuckle. Now you can remove the upper mounting bracket from the strut and place it on the new strut. Reinstall by reversing the procedure.

You can also leave the upper mounting bracket on the car and just unbolt the strut, but this can be more difficult. Support the knuckle with a jack or jack stand. Use a torx socket to keep the strut shaft from spinning and remove the upper mounting nut. Now remove the 2 bolts holding the bottom of the strut to the knuckle. Reinstall by reversing the procedure.

You can do it yourself but you will need to plan on the best part of a Saturday afternoon, a set of spring compressors, and some replacement bolts other than the ones that come with the replacement strut. Spring compressors need careful attention when being used, but it's more care than skill, but improperly used they can do some serious damage. If you decide to tackle it let me know. I don't know the specifics to your car, but it is a fairly standard procedure regardless of make, model or year.