validation between two dropdown list

[monu121]

hello friends,
i am not expert in vb 6.0.i am working in a product which is vb 6.0 based. i am creating two drop down list by writting some text in one ini file(this relate to product code.i am not having this code.i want to apply one validation between two drp down list.i have some code which is reading this ini file and there field Id.By this can i do this .
thanks & Regard
monu

[debasisdas]

Please pass few more details , what exactly you are trying to do.