lemarqq

Hello everybody.
I am a new OS X user ( Mountain Lion )  i love this OS, and i have a few questions about this, please dont mind me.
First of all : is there a way to make the fonts looks more crisp / clear ? Especially under Mozilla Firefox. I use a lot, the internet browsing, so i would spend weeks if it´s necessary, to modify files, and so on. Why are they different looking as Windows OS ?
I tried with Tinker Tool but the results wasnt as i exppected to be.
Another question : are there any tools to let me modify the mouse settings ? I think the mouse is a bit slow on OSX. I want to improve the ¨pointer options¨ / speed /
I purchased a mouse with 1200 dpi, under Windows is pretty fast. Would you recommend me to but MacPilot software ? Would that help me for some other programs from OS X ?
What about the customization / settings of the graphic card ? Could i change the brightness / colors / saturation / gamma / contrast / digital vibrance, etc ??
Please give me some tips, guys. Especially for the fonts rendering.
Thanks a million, in advance.
Any advices / ideas / are welcome.

I tried again to install ML, but it hangs at grey apple logo. I checked my HCL, it's okay.
My mobo is Gigabyte GA EX58 UD5 / Intel I7 920 / GTX 660 /    No overclock at all.
I unplugged the Logitech gamepad, webcam, sound jack, etc. I modified everything in BIOS, step by step. No luck
And i don't know how to see the error / kernel panic ( if any )
All i see is " press any key to start the instalation"  ( something like this ) and when i press a key, i do not have any option to edit / to type " -v "   etc
Would you help me, please ? Every advices / suggestions / are welcome.
Thanks in advance
PS :  I forgot to mention, my keyboard is PS2, and the mouse is USB
Could that be a serious reason ?

Can i burn the dmg file under Windows, with TransMac ? Could i make it bootable on the USB stick, maybe, on the same OS ?
Thank you.