No More Connection in Winxp

I using winxp with two lan cards i am sharing the internet from one lan card. At the same time i am given folder share to access my system files. But 10 clients only are connected my system and access the share folders. I am using the evetid 4226 patch by using that i am change the tcp/ip.sys but i am face the same problem. No more connections. How to solve the problem.