Rounding Shipping Costs to the Nearest "Amount"

[arthurraft]

Hey Guys,

I'm a virtue mart newbie making good progress on a new deployment (for an amateur anyway).

I'd like to round up my shipping costs to the nearest (say) $25 increment (my products are large, and so are my shipping charges
). For my products, it looks "petty" when I charge say $197.73  rather than $200.

I'm currently using an excellent shipping module for an Australian freight company posted on this site
( http://virtuemart.net/index.php?option=com_smf&Itemid=71&topic=17929.0 ) - although this may not be an issue.

Should I be looking at /administrator/components/com_virtuemart/classes/ps_shipping.php  ?

Cheers