Vista - VBScript + WMI + SQL Server = troubles

Hello,

I'am trying to read some performance counters from MSSQL 2008 using
vbscript via WMI (to be strict, what I need is number of logins to the
server).

Normally (I mean, just like for any other windows performance counter) you
would use something like:

---code start---------------
Set objLocator = CreateObject("WbemScripting.SwbemLocator")
Set objWMIService = objLocator.ConnectServer("", "root\cimv2")

sQry = "Select * from " & _
"Win32_PerfFormattedData_MSSQLSERVER_SQLServerGeneralStatistics"
Set colItems = objWMIService.ExecQuery(sQry,"WQL",48)
For Each objItem in colItems
wscript.echo "SQL, UserConnections : " & objItem.UserConnections
Next
---code start---------------

Unfortunately it returns always 0.What is more, running following:
|Get-WmiObject -Class
| Win32_PerfFormattedData_MSSQLSERVER_SQLServerGeneralStatistics
from PowerShell returns zeros as well. But the same counter choosen in
perfmon shows proper value. Both OS and SQL server are 32 bit.

What am I doing wrong?

Regards

--
Wojtek Piszczek