While it is possible to "upgrade xp home to xp pro" you will not find this
recommendation anywhere on microsoft web sites,they simply say not to.
The only way to do it,is boot to xp pro cd,select install xp,new copy,delete
the partition (xp home),create one,then let pro format & install auto...The
reasons microsoft says this,the 2 OS are so identical in 95% of the software,
& that alone causes conflicts,the other 5% causes other problems..

"DaddyMan" wrote:

> I'm not a new user but I wasn't sure which category to post this question.
>
> If I upgrade a computer from XP Home to XP Pro, will I need to re-install
> all pre-existing applications?
>
> Thanks.
>
> Hank