There is a command set posted here:

[Link: ir.premisesystems.com]

Those use the RC5 Protocol, device (aka system address)=5

Commands 1 - 9 are numerals 1 through 9 (I assume 0 is numeral 0)
33=Reset (Ch-)
44=Blank (N/A)
32=Cancel (ch+)
13=Mute
16=Vol+
17=Vol-

Most of these commands are in many "One For All" remotes as setup code VCR/0081.

WalMart sells a remote as an URC-8810w, that has that setup code and Radio Shack is discounting the RS-15-1997 for $15 if you can find one that has that setup code.

The keys are the same except for the ones in hte parenthesis. Blank is not on any key AFAIK.

I can't guarantee that this command set works for your model, but it doesn't cost very much to find out.

If you have any universal remote you might try a Philips VCR code. That's what it apparently responds to.