i have created an inbound specification for a CSV file in Biztalk. My csv file contains columm names in the first row. when reading this file i want Biztalk to ignore the column names and use the data but instead biztalk reads the colunm names as part of the data.

How can i resolve this problem?

You should write a COM component and register it as a pre processor. Refer this pre processor in rec. function. This preprocessor sholud remove first line and sent the remaining document to biztalk.

You can achieve this without using any component or script, In Biztalk Editor Simply insert record before dataloop (This is similar to your data loop) -> reference it one time.
 and map inbound spec dataloop to outbound spec dataloop..

your inbound structure look something like this:
<Root>
<Header> (Ref: 1 to 1)
<Element1></Element1><Element2></Element1>..<ElementN></ElementN>
</Header>
<DataLoop> (Ref: 0 to *)
<Element1></Element1><Element2></Element1>..<ElementN></ElementN>
</DataLoop>
</Root>
your outbound structure look something like this:
<Root>
<DataLoop> (Ref: 0 to *)
<Element1></Element1><Element2></Element1>..<ElementN></ElementN>
</DataLoop>
</Root>

Sorry, here a small correction:

<Element1></Element1><Element2></Element1>..<ElementN></ElementN>

Should be:

<Element1></Element1><Element2></Element2>..<ElementN></ElementN>