on Win7 - regedit
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
new key NoDrives (32-bit DWORD) with decimal value 65536
bitmask:
| Z |
Y |
X |
W |
V |
U |
T |
S |
R |
Q |
P |
O |
N |
M |
L |
K |
J |
I |
H |
G |
F |
E |
D |
C |
B |
A |
| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
1 |
Keep in mind that when Word Starter 2010 tries to update this might cause a 'Internet connection not found error'. I turned the drive back on until update was done.