Navision: how to record transaction with cash advance?

lunna

Dear all Navision expert

I'm not an expert in Nav. For the last 3 months, I've been hanging around with this application with lots of problem. i wish there is anyone in this forum could help me out. Here is the scenario:

In real practice, I have transaction as below:
10-Oct-2010: Advance cash to vendor 1 for clearance service of imported items amount
$2000.How to take this record into NAV ? which screen should i use?

20-Oct-2010: The clearance service has invoice me with total amount of $1500. This
mean that vendor 1 is the one who paid for me, but in Nav, I have to
record this transaction related to 2 diffenrent vendor(one is vendor1, and
the other is clearence service). When this transaction happen how to
record this into NAV ?

25-Oct-2010: my agent (A) issue me the debit note of amount $500. How to take this
record into NAV ?

Please show me how to take this record to control the AP account.
Thanks, Any comment and advice are welcome.