Limit or no conectivity problem

Question

hi everyone...i'd like to share my problem w/ u and hoping someone will solve this problem...
-------------------------------------------my problem is this--------------------------------------
Network = Using CrossCable Only
COMPUTER A = Serve as the Server where in ISP is directly connected
COMPUTER B = w/c is the client
ISP = My Destiny and Ip address is set automatically
Problems are:
1.) COMPUTER A can't access COMPUTER B as well as COMPUTER B can't access COMPUTER A
2.) When internet was shared it gives me the message "COMPUTER A's IP address will automatically set to 192.168.0.1" but when it is shared already COMPUTER A connection appeared limited or no connectivity
3.) When i set COMPUTER A's ip address statically as 192.168.0.1 the message limited or no connectivity appeared gone but i still cannot access COMPUTER B as well as COMPUTER B can't access COMPUTER A and also there is no INTERNET but appeared connected
4.) when internet is not shared and COMPUTER A are statically configured as 192.168.0.1 still both COMPUTER can't see each other and there is still no Internet
---------------------QUESTION's -------------------------------------------------------------------
1.) how can i share my internet w/ out receiving LIMITED OR NO CONECTIVITY to COMPUTER A
2.) HOW CAN I CONNECT BOTH COMPUTER CONNECTED USING ONLY CROSSCABLE CONNECTION W/ BOTH COMPUTER HAVE A INTERNET ACCESS
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THAT IS MY PROBLEM HOPE SOMEONE GIVE ME THE ANSWER ASAP