Intel's BIOS for their motherboards is almost the same among all of their 55 series chipsets. The menu is split into the Main, Advanced, Performance, Security, Power, and Boot menus. The Intel retail BIOS does not include many overclocking options for the CPU but does allow overclocking of the voltages and memory. As such, the Intel DH55TC is more of a Home Theater PC board and is meant to be paired with a Core i5 Clarksdale CPU for the integrated graphics.
One worrying thing about this board is the temperatures using the Intel Retail fan included with the Core i5 661 CPU. The retail fan attained a temperature at idle in the BIOS of over 60C making it unsuitable for cooling. Installing a SpinQ cooler from Thermaltake dramatically lowered the CPU temperature by over 20C, meaning that I would suggest using a better cooling system if you want to overclock the CPU. The PCH and MCH temperatures were also in this lofty range.
Temp using SpinQ
Temp using Intel Retail fan