RS-232 - Bluetooth

Hello everyone, I need some help, I have a barcode reader with usb interface, but I modify barcode reader with configuration barcode, now it is working usb com port emulation mode.. I bought shield link below, But I didn't find how to work this shield, Please help, I connected barcode reader usb cable with this shield (+5v and ground external supply- data+ to rx shield, data- to tx shield) I want it connects and send barcode string to Arduino with my ble shield link below, Please help this is my final exam :(

http://www.ebay.com/itm/RS232-Bluetooth-Serial-Adapter-Communication-Data-Transmission-Module-5V/171531237275?_trksid=p2047675.c100011.m1850&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140602152332%26meid%3D50ca680f18b94f238c2d2b14a79d1e32%26pid%3D100011%26rk%3D2%26rkt%3D2%26sd%3D300935944378

http://www.robotshop.com/en/itead-ble-shield-arduino.html

Anybody help ? :(