Assistance with (WIFI & PCI)Driver installation for Dell Vostro 3550  

I have a Dell Vostro 3550 64 bit that had been wiped clean. I am using Win7 Pro 64 bit. I went to Dell's support sight and search for drivers by the service tag. I have done this many times before with different computers but for some reason this one is messing with me.
Dell site is worst, even with service tag it doesn't give many drivers to download; only BIOS and audio. I have tried downloading my wifi driver fro dell site and from intel site but neither one works and it still shows no wireless device. I have attached an msinfo32 zipped file for your perusal, kindly if you can help me install wifi driver and other drivers like hard disk free fall sensor and finger print as well. thanks

Thanks a lot. In fact, i had seen that list a lot many times but never tried cause I was using service tag to bring my own drivers but with service tag dell used to give nothing more than 3 drivers so was confused whether this pack will work. But this time I tried and all that worked well (in fact previously i tried using Intel proset driver which were updated versions but were not working while dell site showed old drivers which worked like a charm).
Anyway thanks a lot.