I guess that remote desktop functions like Citrix is far more useful when the whole screen is used. Aflegg, can you try with a bluetooth keyboard? Another way is to start the on-screen keyboard via Narrator.exe. One can log in via citrix if the .ica file contains the following rows:
Username=Name
Domain=Domainname
Password=
ClearPassword=Password

Make sure that the Password= is followed by nothing. The *.ica file can be retrieved throught the URL that the Citrix login link points at.

When you are logged in, you can start the Narrator.exe and the On-Screen keyboard. I hope that point and click works on the N770!

//Johan