Step 1: Add exchange gain/loss account for foreign currencies
Step 2: Set up foreign currencies
Step 3: Add foreign currency bank accounts
Step 4: Choose linked accounts for foreign currency transactions
Step 5: Link a currency to a credit card to track customer credit card sales
Step 6: Set method of pricing inventory and service items
Step 7: Add foreign prices to inventory and service items
Step 8: Add foreign vendors
Step 9: Add foreign customers