How to change the "index" name apearing on browser tabs to something like "Welcome"

[wwdileie]

Hi Everyone, not sure where this question would go, this section seemed the most appropriate. I would like to see how I can get browsers to use another title other than "index" (please see attached image). I would like to personalize this so that it is more professional looking and not just bare bones looking . I tried just changing the index name in Xara but it complained that the site won't function properly if I did so!

If anyone has any pointers, I would greatly appreciated it