Andydiehard is going to that match. He purchased a Fulham International membership online which I believe gave him access to those tickets. For a match against Spurs and other top clubs, I dont think tickets ever go on general sale. They are sold to season ticket holders and members first. Someone please correct me if I'm wrong about that. The International (assuming you dont live in England) membership is 35 pounds and comes with a few other perks besides ticket access. If you buy a membership then consider joining the FulhamUSA International Members Club. As an Official Fulham International Members Club, FFC gives us monthly items and a signed jersey to raffle off. No additional charge to be in the FulhamUSA Club, you just need to tell me and send me your info so I can have the club add you to our group.
If you dont buy the membership then you can get tickets from scalpers or you could go on England-based Fulham sites and see if anyone has tickets to sell. Good Luck.