Multiple Price-Fields

[Kim Armann <kim@nichols.de>]

Hi :
- minivend 3.12 (products as an MySQL database)
- SuSE Linux 6.1

I have 4 Colums for prices (in DM OES SFR EURO)
I want to let the user choose his currency ... but I have only 1
Price-Field.
If I work with [if] I can emulate the [item-subtotal] but not the
[subtotal].
Does s.o. know what [calc][loop] I can use, or ... can I change the 
PriceField on-the-fly ?

thx Kim Armann