i'm glad that people have tried and liked this software - if only amd/ati would take notice and replace ccc with something like this!
@subsonic: what i have is two (no three, but that's another story) overclocking profiles, one called 'slow', the other 'normal'.
i use 'auto overclocking' to switch between the two depending if i'm gaming or just 2d desktopping.
here are my fan settings for slow profile. as you can see, zero fan speed until 70C, then it slowly ramps up. this is my slow profile and my card is never going to get hot at this clock speed, especially as i've undervolted it too, on the previous tab.
my fan settings are more aggresive for my 'normal' gaming profile, as i know my card is going to get hot under these cirumstances. i can't tell you what settings you should use, as your card is not going to get as hot as mine, i have a different card to you, with a different fan, in a different case, with different case cooling/ventilation to you. i also have my case fans set up to spin faster at high temps which helps at the top end. so you will need to play with these settings to get your own results.
you can monitor the gpu temp and fan speeds on the screen as you play. go to tools and options >> on screen display >> flash osd >> show all the time and tick the boxes you want...
you also asked about safe values to overclock your card - i don't know i'm afraid. each card comes out of the factory different to its neighbour - one card can be clocked like a beast, the other will fall over at an increase of 5Hz. you've got to play with your card, running your meanest games (crysis is always good for this) to test for stability.
first of all - BE CAREFUL! only make small increases, and test, test, test! keep an eye on the temps, increase the fan speed with the overclocked profile, and BE CAREFUL! generally i've found the core speed can be raised much higher than the memory. use the 3d renderer in att, scanning for artifacts to test your overclock, oh and have i told you to BE CAREFUL?
there's more that you can do with att, but that's a start.