Regarding Windows Mobility Center on Dell Inspiron 15R laptop and Dell Applications

I recently formatted my Dell Inspiron 15R laptop and re-installed a clean copy of Windows 7, but I lost all the customization done by Dell. Before installation, my Windows Mobility Center used to look like this

After a fresh Windows 7 install, I lost all those tile buttons customized by Dell.

Now it looks like this

How can I add Bluetooth and other options to my Mobility Center? Also, I didn't install Dell Support Center, Dell System Software, OS Tools, Turbo Boost Technology Monitor software And QuickSet applications. Are they really important?

Thanks and Regards,

CC