Added info about USB scanners.

README.windows

@@ -31,15 +31,19 @@ xscanimage and XSane also work. xscanimage compiles and runs out of
 the box. XSane 0.92 needs a couple build fixes.
 
 
-Limitations
-===========
+Notes
+=====
 
-The current annoying limitations are:
-  - Only SCSI scanners will work. No USB/FireWire/Parallel.
-  - Tested on Windows 2000 only. Should work on Windows NT/XP too;
-    may or may not work on Windows 95/98/ME.
+- Only SCSI and USB (with libusb-win32) scanners may work. No
+  FireWire/Parallel. The Cygwin libusb port is at
+  http://sourceforge.net/projects/libusb-win32.
 
-Note: there is a Cygwin libusb port (http://sourceforge.net/projects/libusb-win32) so USB scanners might work too.
+- Tested on Windows 2000 only. Should work on Windows NT/XP too;
+  may or may not work on Windows 95/98/ME.
 
-2003/10/23
+- Some scanners' backend may not work because of requirement not
+  supported by Cygwin.
+
+
+2004/02/07
 Frank Zago.