[Tilecache] how can i use my own map tiles with tilecache?

[leena S]

am trying to use my own map tiles with qgis, but seems like i need to
configure the tilecache to be able to receive requests from wms;

i am using Quantum gis 1.8.0 with gdal 1.7.0

when i load my xml file with quantum gis using "add raster layer" icon, i
get nothin, notice that am specifying the local directory of my map tiles;
<ServerUrl>file:///home/mytiles/${z}/${x}/${y}.png</ServerUrl>

this is my xml file:

<GDAL_WMS>
    <Service name="TMS">
        <ServerUrl>file:///mytiles/${
z}/${x}/${y}.png</ServerUrl>
    </Service>
    <DataWindow>
        <UpperLeftX>-20037508.34</UpperLeftX>
        <UpperLeftY>20037508.34</UpperLeftY>
        <LowerRightX>20037508.34</LowerRightX>
        <LowerRightY>-20037508.34</LowerRightY>
        <TileLevel>18</TileLevel>
        <TileCountX>1</TileCountX>
        <TileCountY>1</TileCountY>
        <YOrigin>top</YOrigin>
    </DataWindow>
    <Projection>EPSG:900913</Projection>
    <BlockSizeX>256</BlockSizeX>
    <BlockSizeY>256</BlockSizeY>
    <BandsCount>3</BandsCount>
    <Cache />
</GDAL_WMS>

so am not really sure how can i set up the tilecache to get the requests
from wms server in qgis;
am new with gis technology so i appreciate any help or direction :)
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