I installed in the Windows 7 virtual machine, and then in a virtual machine installed Ubuntu12.04, now want to pass the minicom small tools to implement and ARM STM32F103 development board communication, burn-in development board in the code implementation via a serial port to send data, I just want to receive a string "qiut"

I add Windows 7 COM1 port to the virtual machine hardware, Windows 7 through COM port is a USB drive CH340 turn the COM port,
Minicom configuration is as follows:
Serial port setup
+ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- +
| A - Serial Device,/dev/ttyS0 |
| B - Lockfile Location:/var/lock |
| C - Callin Program: |
| D - the Callout Program - : |
| E - Bps/Par/Bits: 9600 8 n1 |
| F - the Hardware Flow Control: No |
| G - Software Flow Control: No |
| |
| Change which setting? |
+ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
Select save DFL, configuration, after the exit, display initialization configuration, after the completion of the into the following interface:

Don't know link success not

Then enter Ctrl + C and R after zmodem mode choice, but don't get any data

I used on Windows 7 serial assistants sscom32. Exe receive "quit"