Win7x86 install on Dell B130 WORKS!!!!

I noticed lately that when you check on Dell support site that it never mentions that you can't install Win7 on a Dell B130. But fact is now I know you can install it on a Dell B130 manufactured in 2006 three years before Win7 came out. How I know this well for one thing I updated the memory to 2G and left everything as is completely wiping the HDD clean of the previous O/S and did a complete new install of Win7x86 Ultimate and it worked. The only part I had to do besides the win7 updates was to download the wifi card drive and audio and video drivers from windows update and reboot and it worked. So why Dell wouldn't mentioned that such a install with minimal hardware update couldn't be installed on a Dell B130 seems to tell me its the money factor behind what they choose to say only XP can be installed on the Dell B130. I this assumption has more to do with the money side then hardware not being able to run Win7x86.