Be advised that once you install SP1, WinXP will not allow you to install PGP versiom 7.x. It will give you the incompatibilty warning and it will not let you continue, like it does with some software.<br /><br />It will let you use the earlier versions of PGP 6.x.<br /><br />We'll have to see what happens with PGP version 8.x, which is due out soon.