Willing to bet the level of English comprehension is not very high...
That said, uninstall Flash, and install Flash version 22. Make sure to install the correct format as well (x86 if 32-bit and x64 for Sys WOW 64).
That is what I did and it got LDFT working just fine (and it runs about 10 - 35% faster than playing the game via internet browser).
As for Spider X v.3, can't help you there. If you've got older hardware, it might not even work (such as is my case).