>Hi,
>
>First I am not from the VB community and know very little about it but I would require your help.
>
>I would like to know what were the time period (timeframe) when VB4 was used for programming and the same for VB5. I understand that the most recent version is VB6.
>
>I would also appreciate to know if going from VB4 to VB6 is a piece of cake or is there a steep learning curve ?

You surely read french! I just found the history of VB tonight: http://www.c2i.fr/code.asp?IDCode=1079

About the migration from VB4 to VB6, it should be easy. Even easier if your VB4 applications are designed for 32-bits.