I just got a new laptop(Acer-emachines).when i was doing the installation,everything seems okay.The wireless was working well,and now my computer shows i have full internet access but still i cant browse anything...I try to connect it using the internet cable,but still nothing seems to change..What should i do next???

if you are not using a DHCP and you configure your IP address manually check the prefered DNS that must be as same as your Default Gateway address. if you see you internet access but you can't explore , its usualy from DNS. but if you are using a DHCP you must check your DNS server's that have correct address and working. number 1 is more possible. ;)