在将文件附加到SQL-Server 2005 DTS中的表之前从文本文件中提取数据

I have to work in a DTS environment in 2005 (too complicated to explain) and I have a comma delimited text file that is to be appended to the main table. I'd like to pull the last column in the text file out for the first record and use it as select criteria for a delete command. But how can I do this in the older DTS environment?I have to work in a DTS environment in 2005 (to