Don't know about the flooring but may be able to help with the net curtains.
You don't need to drill! Depending on what type of window frames you have you can get different fixings. You can get tension rods which are spring loaded.
You can also get ones that attach by means of pads that are self adhesive and you stick these to your window frame. They a hook or similar on them onto which you attach your tension rod. Tip: don't rely on the stickness of the pad, they will fall down! USe some ectra superglue or something.
See here for some examples:
http://www.nets2go.co.uk/net-curtains/accessor ies.php