For an interesting window treatment that is attractive and provides privacy, you can easily install curtains over already-hanging window blinds. Since window blinds are typically cut and installed to fit inside the window casing, curtains are can be hung by installing rod brackets on the wall just outside and above the window, then suspending the curtains and rods on the brackets. Curtain-hanging hardware, such as a tension rod that would interfere with the use of the blinds, will obviously not work. Hanging curtains on a window with blinds is a simple job that can be accomplished by the average handyman with common home-repair tools.
Determine where you want to hang your curtains. Hold a rod-mounting bracket on the wall and faintly mark its position with a chalk pencil, indicating where it will be installed. Carefully measure and note the position of the bracket in relation to the corner of the window casing to accurately position the opposite bracket. Transfer the measurements to the opposite side of the window. Holding the bracket in place on the wall, pass the tip of a chalk pencil through each of the bracket's screw holes to mark their positions on the wall. Repeat to mark screw holes on the opposite wall.
Place the appropriately sized drill bit for your wall anchors in the drill-chuck and tighten. Drill horizontal holes through each of the screw-hole marks on the wall. Insert a wall anchor in each hole and push it in until the hole in the anchor is flush with the wall surface.
Position the bracket on the wall, aligning its screw holes with the wall anchors. Pass the tip of a screw through the wall bracket and into the wall anchor. Use a screwdriver to tighten the screw. Repeat until both curtain-mounting brackets are securely installed.
Thread or otherwise suspend the curtains on the rod. Place the ends of the curtain rods into corresponding mounting brackets. Evenly distribute curtain fabric across the curtain rod to finish the project.
If you are installing rod brackets into wood or into studs, it is not necessary to use wall anchors. If the blinds have been installed outside of the window casing, use a curtain rod and mounting bracket that holds the curtain far enough away from the blinds so they can function properly.