I have a Dell Inspiron 640m laptop and I want it to sense the IR signals from the remote which comes with the Dell inspiron 1500/1525 models. I recently found that my laptop doesn't have an IR sensor. WIll I be able to get something like a USB IR receiver in the market? if so what will be its cost? Will I be able to use it in windows and linux if I use it with the Lirc project? Thanks in advance...