Wage type Date

Hi Gurus

The wage type 2034 which is a shift premium wage type. It is having two date ranges, one is 01.01.1900 to 31.03.2003 and the other date is 01.04.2003 to 31.12.9999. In the wage type characteristics and wage type permissibility it is showing the start date as 01.01.1900 and end date as 31.03.2003. But I don't want those date, but instead I would like to have the dates as 01.04.2003 to 31.12.9999.

Please suggest me how to get these dates to the wagetype.

Thanks and Regards

Harish