Having some troubles PE WF5, xp32bit, dell5400

We are having some display troubles.

at start up of wf5 there seems to be no trouble,

but at some point:

1-hovering over icon does not display the function of the icon

2-hovering over a part in an assy does not display the part#

3-when you hilite and "select parent" does not show the "group" the selected parent is in, in the assy tree.

4-when assembling and especially when using "show component in seperate window"

you can not see the surface you pick (won't hilite but you can still pick a surface, it's a guess)

This is happening on 2 different machines(identical) and the 3rd item is happening the same 2 and a fairly new machine

Any help would be appreciated

thanks

Tim

-