Visual Basic Scripting Edition 

Returns the smallest available subscript for the indicated dimension of an array.
LBound(arrayname[, dimension])
Arguments
 arrayname
 Name of the array variable; follows standard variable naming conventions.
 dimension
 Whole number indicating which dimension's lower bound is returned. Use 1 for the first dimension, 2 for the second, and so on. If dimension is omitted, 1 is assumed.
Remarks
The LBound function is used with the UBound function to determine the size of an array. Use the UBound function to find the upper limit of an array dimension.
The lower bound for any dimension is always 0.
Requirements
Version 1
See Also
Dim Statement  ReDim Statement  UBound Function