My suggestion is that you carefully consider which notifications annoy you the most and which may provide the most benefit. (Let's hope they're not one and the same.) For example, it's not bad to be reminded that you need to obtain an antivirus program or to periodically clean up the PC or to run a system scan with Windows Defender.
Windows 7 is already better about some notifications. For the last few years, Vista has told me each morning that it's downloading the program guide for Media Center. I consider this little more than fawning puppy behavior - look at me, look at what I can do. I have to wonder what programmer thought it would be a good idea to brag about a common, unremarkable task at every startup. I have to wonder why nobody pointed out that it would be better to only declare when it failed to connect to get the guide. Now that's something I might be interested in knowing.
And from Media Center in Windows 7? Not a peep.
I hope that this article has helped you take control of your notification area system messages and icons. Thank you for reading this, and thank you for visiting Bright Hub.