unicode to nonunicode conversion

hi ,

im actually redesigning a package which was earlier using datareader,now im using OLEDB provider for Oracle.

problem is i have more than 50 tables which are of predefined structure which was formed by datareader.

where all the datatypes were varchar in target,

now when im using OLEDB it is throwing exception to convert to Unicode string.

i know that i have to use dataconversion transformation to do this,

but for all 40 tables it is difficult and time consuming.

so any other way to do it ?