i found this today
http://msdn.microsoft.com/library/de...rySettings.asp
BitmapCacheSize : REG_DWORD Default is 1500. This value is the size, in KB, of the bitmap cache in memory. The maximum value is 32000.
BitmapPersistCacheSize : REG_DWORD Default is 10. This value is the size, in KB, of the bitmap cache file.
0x5DC(1500) and 0xA(10) respectivly,, im using on these now, i noticed that the defaults on JJ was v low in comparison so i upped them and it has got rif of the black boxes and real slow refresh
however
i added this key
HKEY_LOCAL_MACHINE\Software\Microsoft\Terminal Server Client
add FullScreenAlways : REG_DWORD added value 1
dosent make it full screen, the way were after, it refers to the terminal session size being forced to 640x376 256 colours, rather than having a 1024x768 session that you have scroll bars on to pan around..