>>893458give up and get a cheap drill. - this will take many hours and you need a lots of luck and a steady hand--> with no drill you have to hammer in as best you can a divet for a pilot-hole. Then hold a smaller cement screw than the one you are eventually going to use with your fingers as you twerk the socket wrench. with luck you'll catch and can go in. If you use the larger screw right off the bat, you have to worry about the cement crumbling as you twerk without an anchor and then the hole will be too big. So you after you use the smaller cement screw to create the pilot hole, you take it out, then fill the hole with some heavy duty caulking (not silicone, but maybe the kind used for mirrors). Finally, rub the larger cement screws with some of the caulking and go to work mounting.
The process above disregards any use of the anchor but perhaps you can bang away ery carefully and set an anchor in. check to see on the instructions if your cement screws require an anchor.
If all else fails, get some 2x4's, secure them against the wall and use the wood screws.
