It's crazy, but it's possible: just connect an IR recevier to your audio card, and you'll be able to record remote's code!

Look at these images:
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I obtained them just by connecting an IR receiver (which I took from an old broken VCR) to line-in of my audio card, pressing a key on the remote, and starting sampling at 38000 Hz.

I think you could obtain same thing using a TSOP 1738, or TSOP 1736, or 1138, or 1136...., don't know, I only know that last two digits are for carrier frequency (36, 38 or 40 KHz), and that remotes work "around" 38 KHz.

This document (not mine) explains how to interpret the waveform to obtain a binary 0/1 sequence:
[Link: minidisc.org]

Now, is anybody able to figure out how to translate this data to standard pronto code?!?

If you're not, somebody posting waveform of a known remote whose pronto codes are available on this site would be very appreciated! I'll do the reverse engineering by myself! ;-)