Multistage Op-Amp Differential Amplifier

I need a complete Multisim design that takes a 1 mV-peak, 1 kHz differential sinusoid, strips away its DC component with a separate front-end DC-blocking filter, rejects a 100 mV-peak 1 kHz common-mode... (Budget: $10 - $30 USD, Jobs: Analog Electronics, Circuit Design, Electrical Engineering, Electronics, Engineering, Prototyping, Signal Processing, Simulation)