What were the changes of the past to present navigational system?

how can I get past the block system on my computer?

where can I buy an in-dash navigation system for a 2005 nissan altima SE. if you know a website or any place where I can buy...

Is it possible for me to "downgrade" the operating system on my laptop?, which came with Vista which I can't stand, to someth...

Where I can paste the new icons which I have downloaded from Internet ?

How do I change my email from uk to usa. I was given uk but I live in the usa

How do you change your computer langauge from english to chinese? because I cant copy and paste on Foxy hk music download, so...

What do I have to do to change the parental settings on my computer so I can set up another email account? How do I change it?

Can you change your username on youtube?? How?

what operating system is better?

Can I change my aol screename without signing up for a new screename?