recently i'd downloaded a new version of windows 7 alchemist from one torrent site.this os is very good,but i got a small problem whenever i'm trying to connect my internet
i'd installed the windows 7 alchemist,after that i tried to connect my internet,then it worked well and once i'd unplugged my internet with my laptop,the internet connection never got established,shown a error message that configure ip address..then i tried a lot of thing,


but i didnt configure my ip address manually,



then i formatted my os once again with the same windows 7 alchemist.and i'v again tried to connect to my net,just as the first time,my net connected very well.but when i tried to connect it second time it asked me to configure ip address,
i'm from india,my isp is wi5 zylog,in this every user has given a user id and pass,so whenever we restart our os and whenever we open any browser it asks for the id and pass for the first time .then we dont have to enter pass till we will shutdown the internet adapter
can u plz help me,by solving this thing
thank you