You could use "uptime" - I think I got it in a resource kit.
AFAIK it just interrogate the system log for you.
Code:
C:\Temp>uptime sgb007968 /s
Uptime Report for: \\sgb007968
Current OS: Microsoft Windows XP, Service Pack 2, Uniprocessor Free.
Time Zone: GMT Daylight Time
System Events as of 14/09/2005 08:11:59:
Date: Time: Event: Comment:
---------- ----------- ------------------- -----------------------------------
16/06/2005 03:14:05 Shutdown
16/06/2005 03:15:07 Boot Prior downtime:0d 0h:1m:2s
22/06/2005 16:44:28 Shutdown Prior uptime:6d 13h:29m:21s
24/06/2005 07:57:17 Boot Prior downtime:1d 15h:12m:49s
27/06/2005 16:10:45 Shutdown Prior uptime:3d 8h:13m:28s
27/06/2005 16:11:45 Boot Prior downtime:0d 0h:1m:0s
28/06/2005 08:01:20 Shutdown Prior uptime:0d 15h:49m:35s
28/06/2005 08:02:17 Boot Prior downtime:0d 0h:0m:57s
01/07/2005 12:04:47 Shutdown Prior uptime:3d 4h:2m:30s
01/07/2005 12:05:42 Boot Prior downtime:0d 0h:0m:55s
08/07/2005 13:33:02 Shutdown Prior uptime:7d 1h:27m:20s
08/07/2005 13:33:59 Boot Prior downtime:0d 0h:0m:57s
08/07/2005 13:37:36 Shutdown Prior uptime:0d 0h:3m:37s
08/07/2005 13:38:35 Boot Prior downtime:0d 0h:0m:59s
11/07/2005 08:02:32 Shutdown Prior uptime:2d 18h:23m:57s
11/07/2005 08:03:30 Boot Prior downtime:0d 0h:0m:58s
13/07/2005 17:36:33 Shutdown Prior uptime:2d 9h:33m:3s
21/07/2005 08:54:35 Boot Prior downtime:7d 15h:18m:2s
25/07/2005 16:21:57 Shutdown Prior uptime:4d 7h:27m:22s
25/07/2005 16:22:54 Boot Prior downtime:0d 0h:0m:57s
26/07/2005 07:48:26 Shutdown Prior uptime:0d 15h:25m:32s
26/07/2005 07:50:16 Boot Prior downtime:0d 0h:1m:50s
02/08/2005 09:06:08 Shutdown Prior uptime:7d 1h:15m:52s
02/08/2005 09:07:02 Boot Prior downtime:0d 0h:0m:54s
12/08/2005 13:59:52 Shutdown Prior uptime:10d 4h:52m:50s
12/08/2005 14:00:47 Boot Prior downtime:0d 0h:0m:55s
12/08/2005 16:34:43 Shutdown Prior uptime:0d 2h:33m:56s
12/08/2005 16:35:53 Boot Prior downtime:0d 0h:1m:10s
13/08/2005 10:27:04 Shutdown Prior uptime:0d 17h:51m:11s
13/08/2005 10:28:03 Boot Prior downtime:0d 0h:0m:59s
19/08/2005 09:54:17 Shutdown Prior uptime:5d 23h:26m:14s
19/08/2005 09:54:44 Boot Prior downtime:0d 0h:0m:27s
Current System Uptime: 25 day(s), 22 hour(s), 17 minute(s), 40 second(s)
--------------------------------------------------------------------------------
Since 16/06/2005:
System Availability: 89.7113%
Total Uptime: 80d 22h:13m:3s
Total Downtime: 9d 6h:44m:51s
Total Reboots: 16
Mean Time Between Reboots: 5.64 days
Total Bluescreens: 0
