I use fastnet99 to manage my dns.( an incredible boon for all connections)
manually;
To configure TCP/IP to use DNS
Open Network Connections.
Right-click the network connection you want to configure, and then click Properties.
On the General tab (for a local area connection) or the Networking tab (all other connections), click Internet Protocol (TCP/IP), and then click Properties.
If you want to obtain DNS server addresses from a DHCP server, click Obtain DNS server address automatically.
If you want to manually configure DNS server addresses, click Use the following DNS server addresses, and in Preferred DNS server and Alternate DNS server, type the preferred DNS server and alternate DNS server IP addresses.
To configure advanced DNS properties, click Advanced, click the DNS tab, and do one or more of the following:
To configure an additional DNS server IP address:
Under DNS server addresses, in order of use, click Add.
In TCP/IP DNS server, type the IP address of the DNS server, and then click Add.
To modify the resolution behavior for unqualified DNS names, do the following:
To resolve an unqualified name by appending the primary DNS suffix and the DNS suffix of each connection (if configured), click Append primary and connection specific DNS suffixes. If you also want to search the parent suffixes of the primary DNS suffix up to the second-level domain, select the Append parent suffixes of the primary DNS suffix check box.
To resolve an unqualified name by appending the suffixes from a list of configured suffixes, click Append these DNS suffixes (in order), and then click Add to add suffixes to the list.