I am pretty new to Excel Object Model. I need some help.

I have two worksheets that have two columns in both where data has to be
matched and non-matching data have to be marked out in one of the sheets.

Following is the code that I use to do the match :
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'STEP-1 : Find MasterID in Parent set
Set rng1 = sA.Range("A:A").Find(sB.Col1.cell(2,1), , , xlWhole)

if not rng1 is Nothing then

' STEP-2 : Filter out all rows with matching MasterID from the Parent set
sA.Range("A1:Q5000").AutoFilter( _
Field:=13, _

Criteria1:=sB.Col1.cell(2,1) , _
Visibledropdown:=False)

set rng2 = sA.autofilter.range
'set rng2 = sA.autofilter.range.specialcells(xlVisible)

' Get the number of rows filtered
intFilteredRowsCount = rng2.Columns(13).SpecialCells(xlVisible).Count-1

if not rng2 is nothing then

' STEP-3 : Find the ChildID in the filtered rows of Parent set.
Set rng3 = rng2.Range("A1:A" & intFilteredRowsCount ).Find ( _

sB.Col3.Cells(2,3), _

, _

, _
xlWhole,

xlByColumns, xlNext)
end if

end if


I expected the "rng2" to have cells/rows only that met the filter
criterion, but though the worksheet sA displays only the filtered rows, the
find function in STEP-3 is searching the entire worksheet as if there was no
filter.

My queries:
1. Why is the rng2 visibly filtered, but not accessible as filtered set?
2. Why does the value of rng2.cell(R, C) correspond to the value of cell( R,
C )
in used range of the worksheet despite the fact that rng2 represents a
range
which should hold a set of filtered rows?
3. How should I access the set of resulting data after I apply the
autofilter method on a range?

Could anyone throw some light on the above problem?

Thanks, Rajesh