There's a newer version of Lumasharpen at
http://dropcanvas.com/l46x9 There's a guide available there too. The easiest way to 'install' it is save the txt, change the extension to psh and move it to the mpc\shaders directory. Feel free to tweak it to your liking, the only ones I changed were strength=0.9 and pattern=8. I prefer is as a pre-resize shader but try post-resize as well, you could even use it as both for a lot of sharpening.
Finesharp
http://avisynth.org/mediawiki/FineSharp you'd load in the avisynth tab of ffdshow.
LSFMod
http://avisynth.org/mediawiki/LSFmod is another avisynth filter.
Unsharp <30 strength in ffdshow's sharpen tab is worth looking at as well. I've used them all regularly but find LumaSharpen has the highest sharpen to artifact ratio to my eyes. You'll have to decide which one you prefer.