PS1 Game on PS3 - help please.

Thanks in advance to anyone who responds to this.

So I bought a PS1 game Syphon Filter on Ebay and it is not working on my PS3. This is the first PS1 game I've bought to try, therefore making it difficult to know whether there is a problem with my system in regards to playing PS1 games. It does not read the disc at all. Here is some info to help weed out the "I need more Info questions"

-I have the 60gb PS3 model CECHA01 (listed as able to play ps1,2 and 3 games)
-I have created memory slots for both ps1 and ps2 (and so far I've had no problems with ps2 games)
-Syphon filter is listed on a list of tested compatible games for ps3. (accuracy and sources of wiki unknown) http://en.wikipedia.org/wiki/List_of_PlayStation_3_backward_compatible_PlayStation_2_and_PlayStation_games
-I downloaded an emulator that is suppose to allow ps1 games to play on my computer (ePSXe) to try and test the disc and it was unable to play disc (my computer wouldn't even read it, it just sat there trying and eventually stopped responding.)
-PS3 software is up to date.
-PS3, PS2, Music Cds and DVDs all work fine (retested all today)

My problem is none of my test could conclusively direct the issue to the disc itself, and I do not want to whine at the person who sold it to me unless I am very sure it IS the disc. Does anyone have any insight on conclusively testing this thing as viable or have any suggestions of anything else to check to make this work? And no I do not have a PS1 to test it on

thanks

-LV

I thought about doing it in both, but wasn't sure if posting the same thing in 2 places was allowed. Figured active PS1 gamers may be doing so on their ps3.

thanks for your response.