i have a error message in php when i try to use odbc client access connection, the message is :
Warning: odbc_connect(): SQL error: [IBM][Client Access ODBC Driver (32-bit)][DB2/400 SQL]Communication link failure. COMM RC=0x5, SQL state 08S01 in SQLConnect in c:\inetpub\wwwroot\test\test_odbc.php on line 4
Couldn't make a connection! "

but if i use odbc in another pc aplication like vb,cr or office it's work.
there is any one know why?
for info i use win xp with iis v5 , php 4 and as/400 with os v3r2

thx for help