IT, SQL server and Apache support

I installed apache2.2 and php5 on a windows 2008 server (R2, standart edition). The php files are reading data from MS SQL. MSSQL connection is with ODBC, and everything works fine at the server. [login to view URL] page is working on the browser, but other clients can not open this page, getting an error like "page can not be loaded, server error". Clients can ping the server, and even make remote connection to the server without problem, which means that network is working. But somehow the server seems to be blocking the requests... Our second problem, is we have to create ODBC DSN connections from clients and see the SQL server. When we try to add ODBC, the system see the name of SQL server in the list, but cant login it with the user sa. I dont have any idea why this problem occurs also. So, i will give you the remote connection of a server, you can make remote connection to our server, then test and solve these 2 issues. Im not sure what the problem is related with. Is it windows setup? Is it apache / PHP setup? or is it SQL server setup? All i want is to see the ODBC connection working on the 1st computer, and see [login to view URL] working on the browser. Thanks.