Open the file and read each line.
If the line contains "Minimum" then extract the number.
I assume your familiar with the filesystemobject. so...
If InStr(fso.ReadLine,"Minimum"

>0 then
TextStr = fso.ReadLine
StartNo = InStr(TextStr,"Minimum"

+ 10
EndNo = InStr(TextStr,"ms"

oMin = Mid(TextStr,StartNo,EndNo-StartNo)
TextStr = RIGHT(TextStr,len(TextStr)-(EndNo+2))
StartNo = InStr(TextStr,"Maximum"

+ 10
EndNo = InStr(TextStr,"ms"

oMax = Mid(TextStr,StartNo,EndNo-StartNo)
TextStr = RIGHT(TextStr,len(TextStr)-(EndNo+2))
StartNo = InStr(TextStr,"Average"

+ 10
EndNo = InStr(TextStr,"ms"

oAve = Mid(TextStr,StartNo,EndNo-StartNo)
End If
BDC.