I just tried to ad d new website & regardless of what I rename it, it says there is already one and add a number at the end, so i do, and it rejects it's own suggestions to me. I wouldn't delete the old one. Since it is not allowing me to make a new one no matter how I try to comply with it's demands. SO ... not the present we were expecting when we unwrapped the gift.
Are you referring to using Sitebuilder Plus instead of Sitebuilder Desktop? Or are you talking about using our newer builder, WebsiteBuilder? Lynn is correct that either "new" builder you could be referring to is cloud-based and doesn't require an install. It is not necessary to delete anything before using them.