adding static DNS entry to Window XP or changing the DNS server

Today I find I cannot access some sites.
By checking with the nslookup, found it is blocked by my DNS provider.
There are two ways to work around:
1) change the primary DNS server to the one not blocked or still working under Local Area Connection.
2) change the hosts file under C:\WINDOWS\system32\drivers\etc
add the ip address you find with your site name
xxx.xxx.xxx.xxx    site_name