Head over to www.TFTcentral.co.uk, they have an area where they post ICC profiles and optimal settings gathered either from reviews they have done or from user submissions. The settings they offer are from hardware calibration. Although every screen is different (even within the same model!), the settings they have should get you close to accurate as far as calibration standards go.
Here is the link with the settings database, the vs248h-p is there: http://www.tftcentral.co.uk/articles/icc_profiles.htm
Personally I am pretty happy with this monitor in sRGB mode. The only problem is that the default gamma is about 1.8 from my testing, so I lowered the gamma correction in my Nvidia Control Panel to 0.85 and got it closer to gamma 2.2. Looks much better...colors are no longer washed out. You can try that, or try the settings on tftcentral...although be aware that those are hardware calibrated to sRGB standards, and you may not prefer the way it looks.
Hi - Let's clarify something right away. Do not use VGA & HDMI cables from the same source at the same time. Just remember that what ever source you feed this monitor with an HDMI cable will be the one that sound is applied to the headset jack on the back. Anything else, you will have to hook up your speaker system straight to the source unit ( PC-Game unit - video feeds ) Hooking up directly to the source unit will generally give you the best sound anyway. If you have more than one feed to the monitor, it has a switch to select which one you will receive at any given moment. The HDMI feed will be the only one that sends sound to the monitor headphone jack, and you can plug a sound system into this jack or just headphones. - Good luck and enjoy! - Jim T.