diff -ur linux/drivers/input/mousedev.c linux.mine/drivers/input/mousedev.c
--- linux/drivers/input/mousedev.c	2001-09-30 15:26:05.000000000 -0400
+++ linux.mine/drivers/input/mousedev.c	2002-10-26 18:20:19.000000000 -0400
@@ -62,7 +62,7 @@
 	struct fasync_struct *fasync;
 	struct mousedev *mousedev;
 	struct mousedev_list *next;
-	int dx, dy, dz, oldx, oldy;
+	int dw, dx, dy, dz, oldx, oldy;
 	signed char ps2[6];
 	unsigned long buttons;
 	unsigned char ready, buffer, bufsiz;
@@ -117,6 +117,7 @@
 						case REL_X:	list->dx += value; break;
 						case REL_Y:	list->dy -= value; break;
 						case REL_WHEEL:	if (list->mode) list->dz -= value; break;
+						case REL_HWHEEL: if (list->mode == 2) list->dw -= value; break;
 					}
 					break;
 
@@ -260,9 +261,22 @@
 	list->bufsiz = off + 3;
 
 	if (list->mode == 2) {
-		list->ps2[off + 3] = (list->dz > 7 ? 7 : (list->dz < -7 ? -7 : list->dz));
-		list->dz -= list->ps2[off + 3];
-		list->ps2[off + 3] = (list->ps2[off + 3] & 0x0f) | ((list->buttons & 0x18) << 1);
+		if (!list->dz && !list->dw) {
+			list->ps2[off + 3] = 0;
+		} else if (list->dw > 0) {
+			list->ps2[off + 3] = 0x2;
+			list->dw--;
+		} else if (list->dw < 0) {
+			list->ps2[off + 3] = 0xe;
+			list->dw++;
+		} else if (list->dz > 0) {
+			list->ps2[off + 3] = 0x1;
+			list->dz--;
+		} else if (list->dz < 0) {
+			list->ps2[off + 3] = 0xf;
+			list->dz++;
+		}
+		list->ps2[off + 3] |= (list->buttons & 0x18) << 1;
 		list->bufsiz++;
 	}
 	
@@ -272,7 +286,7 @@
 		list->bufsiz++;
 	}
 
-	if (!list->dx && !list->dy && (!list->mode || !list->dz)) list->ready = 0;
+	if (!list->dx && !list->dy && (!list->mode || !list->dz) && ((list->mode != 2) || !list->dw)) list->ready = 0;
 	list->buffer = list->bufsiz;
 }