Move Website to new ISP

A client required that some websites be moved around between different ISPs and being a newbie when it comes to web sites, I found the process a little confusing, especially when it came to what to do with the name server information. Hopefully, the description of the steps required to accomplish this will be of use to someone else. The original website; www.site1.com, was hosted by webhostA with name server xx1.webhostA.com/xx2.webhostA.com. Another site; www.site2.com, hosted by another ISP; webHostB with nameserver yy1.webhostB.com/yy2.webhostB.com was parked to an obscure domain name. Now I wanted to use the Domain Name for Site1 (www.site1.com) as the domain name for Site2, and park the original web site's content. This entailed the following steps:

1. Backup website (www.Site2.com) on webHostB
2. Delete website (www.Site2.com) on webhostB
3. Create New website on webhostB using domain name from Site1 (www.site1.com).
4. Reinstall backup of website.
5. Change name server information on webHostA to that provided by webHostB when you added the new website (ns1.webhostB.com/ns2.webhostB.com or similar).

After a few hours, your changes should be propagated and the original www.site1.com address will now be pointing to your content hosted on the new ISP. You still have the problem of what to do with the parked site at the original ISP as you will still be paying for the services.