Magento

Hi,

I am running wamp server 2.0 and using magento community edition 1.7.0.2 on this to develop Magento sites.

How can I upgrade to wmap 2.2 with out loosing any data (database, extensions,wamp configurations.) etc.

Is there a secure way of doing this.
Because if I am going to loose any of the important data.I am going to be in trouble.

Please help if some one of you have done this.

Thanks