UML 2.0 & Distributed System

Can some one show me a example of a Distributed System in UML 2.0 Im trying to work out how to show the connection of a UML 2.0 Class Digram across multiple sites.

OK is this basicly what i need to do is it how I show it in UML?


So Aa would have a method like getBa and get Bb and also it can have getCa and getCb ?

Only the class Aa?
Then Aa possesses methods getBa, getBb, getCa & getCb only.

pls ,i am new to this site and found it in the process of trying to solve a little question,it goes thus:
A product is to be installed to capture the process of renting items from a video club
overview:1.The customer arrives at the rental desk with items for rent
2.The clerk receives items from customer and enters them into the system,the system calculates the rental total,the system captures information about rented items and payment.Currently the system has 3 plans:
a.Two old movies for 80% of the regular value(Plan1)
b.Two new movies for 90% of the regular value(Plan2)
c.After 10 plan( 2) rents the customer gets one new movie free
Use UML to analyse the problem ststing :
1.Use Case Diagram
2.Sequence Diagram
3.Class Diagram
4.Collaboration diagram
5 pSEUDOCODE OF THE OPERATION

My friends and i have spent a lot of time trying to unravel and get a solution to this assignment,i would appreciate if anyone could solve this for me ,my yahoo email address is concetual007 .Pls people i need your help to solve this as i have a deadline to submit in 4 days from now,thanks everyone for your anticipated help-john