Because it’s hard to know, if my shaderpacks works so far on most systems, I give you the DEV v6.0.36a free for 24h for testing. Please noticed, that this shaderpack isn’t done yet at all! I just want to know if you get any graphic issues or errors.
If you noticed any problems, you know where you have to go: http://dedelner.net/?p=1270
Otherwise, here is the download link: http://dedelner.net/?p=1344