What is the better way to know if the program has access to another computer in the local network

I am doing a program (Visual Basic 6) that access to another computer in the local network, so I need to make a function that tells me if the computer is accessible. Only this, if it is accessible.

I have the name (not the IP) of the computer to test if I have access, and perhaps the computer running the program has no access to a DNS server (for example, a laptop that it is not at the office). Both computers, the one which is running the program and the one that must be accessed, belong to a Windows Domain in a Windows 2000 or Windows 2003 environment).

The question is that this function must answer as fast as possible.

Essentially, I need to know if the destination computer has a SQL Server and if it is sharing a -specific- directory.
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gllanderasAsked:
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gllanderasAuthor Commented:
Thanks, hes, but I'm looking for something faster.

I wonder if is possible to do using WMI. I did a experiment with this code (vbscript):

On Error Resume Next

strConnection = "winmgmts:\\comp1"

Set objWMIService = GetObject(strConnection)
lngError = Err.Number
Set objWMIService = Nothing

If lngError = 0 Then
  MsgBox "OK."
Else
  MsgBox "NOK:" & CStr(lngError)
End If

But this seems to work only if the user is a member of the administrative group of the domain.
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gllanderasAuthor Commented:
hes, thanks for your help.

I assume that the only way to do this is sending a ping to the computer with the code posted in that link.
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