Just to update...
I've manage to log into the WindowsXP accout from the 5800, i found that if i clicked onto the Windows account password feild this would show the a text 'prompt' line inside the box.
I then found that tapping onto the white box feild with the 'Send' button in the Logmein settings and options bar, Nokiai's inbuilt keyboard then opened this allowed me to enter the password into this box, and by clicking onto 'Send' button , would send what i had just entered to the Windows account password field i had previously made active.
I don't see why the way of entering text in this manner, doesn't apply right across the desktop being remoted onto.
Also, it appears that if there was someway to stop the webpage from being refreshed by having to be rebuilt the webpage before it could be enlarged , but just refreshing while the webpage is in it's enlarged state would help.
Hope this info is of use .
regards