Hi Pedro

The modules I used were cheap as chips and I have found them quite reliable...I would reccommend them all the way, the instructions are crap but the comments above are completely accurate and will iron out any issues you may have. You need to use a PIC that has a hardware USART such as 16F88 as the RF modules only run at a baud of 19,200 and with picbasic only the Harware USART can achieve this.

Apart from that if you can't follow the instructions written by some asian dude in a language fit for a 12 year old get back here and ill try help you out with any problems u may have.

Tony