Problem With Enclave Pc Game?

I put Enclave on my pc without problems.My pc has a Radeon 9250 card on it...256 ddr it also has 1 gig ram with 80 gigs free space with 4095 virtual mem .... well when i open the game sometimes it locks up during the menu screens other times it makes it to the game then locks up in the begining of it im able to play rainbow six lockdown without problems but do trying to play Eclave ..... any suggestions on Eclave updates or what might the problem be.Ive went to the games website an forum posted there but even after bout 3 weeks no replys even though the moderators etc have veiwed the listing so hoping can get help here...