I've worked with remittance files before.
The BEST KB format looks similar to what we use in Norway.
Do you have any requirement with regards to scripting language ?
I would be partial to PHP, but Python would probably work as well. :-)
EDIT: I will consider offers for both just parsing the file and automating the service.
Service works as such:
1.User make order on website. Details (including BTC address) goes into Order MYSQL file.
2. User makes payment to bank account in CZK (czech crowns) or EUR.
3. Program downloads the script (this is part of the bank software, the script does not need to do this)
4. Script sees new downloaded file, parses it, checks database to see which payments are new, matches payments variable (ID) symbol to payment order in Users order Mysql (from line 1)
5. Using API If an order has been filled - purchase said amount of BTC at Mt.Gox based on exchange rate
6. Uusing API send said purchased amount of BTC to user
7. keep track of everything (how much BTC was purchased, how much, etc)
Fairly straightforward workflow.