Connect the mbed and a wireless with a RS232 interface

Hi!

I'm designing a hardware containing the mbed and the WIZ610WI wireless module, and I want to connect those with a RS232 interface. But the wireless module requires a 5-wire connection, with the RTS and CTS lines, and I could not figure out how to use these connections with mbed UART.

Can anybody show me a way to configure a serial port in mbed that includes RTS/CTS? Would it be fatal for the aforementioned purposes to ignore these lines in my design?

Thanks in advance!