NOTWITHSTANDING NUMEROUS ATTEMPTS TO GET A THOROUGH BRIEFING ON HIS FLT FROM FLT SVC; PLT OF C172 WAS NEVER ADVISED OF TFR IN VICINITY OF CHICAGO. VIOLATED SAME.

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ON SEP/TUE/03; I SCHEDULED A DEP FROM MARLETTE; MI; IN A C172 FOR A FLT TO MISSOULA; MT. IN PREPARATION FOR THIS FLT I WATCHED THE LCL TV WX STATION AND LISTENED TO THE RADIO ON THE WAY TO THE ARPT. ONCE AT THE ARPT; I TRIED NUMEROUS TIMES TO CONTACT THE FSS BY TELEPHONE WITHOUT SUCCESS; EACH TIME RECEIVING A BUSY SIGNAL. I CONTINUED TO REDIAL THE NUMBER FOR THE NEXT 15-20 MINS; STILL BUSY. I THEN DEPARTED MARLETTE FIELD ENRTE TO MISSOULA; MT ONCE AIRBORNE I ATTEMPTED TO CONTACT FSS; BUT DUE TO THE LOW CEILING TO MY ALT OF ONLY 2500 FT; I WAS UNABLE TO MAKE RADIO CONTACT. BECAUSE THE WX WAS OF CONCERN AND I HADN'T BEEN ABLE TO CONTACT THE FSS; I DIVERTED TO BENTON HARBOR; IL; IN ORDER TO OBTAIN A COMPLETE WX BRIEFING. AT THE FBO AT BENTON HARBOR I REVIEWED THE COMPUTERIZED WX RPT FOR THE ENTIRE RTE OF FLT AND PRINTED OUT THE RPT TO TAKE WITH ME. BASED ON THIS WX RPT; I DEPARTED BENTON HARBOR FOR MISSOULA NAVING TO CHICAGO HEIGHTS TO AVOID THE CLASS B CHICAGO AREA. WHEN I LANDED AT DES MOINES; THE CTL TWR REQUESTED THAT I TELEPHONE THEM. THEY PUT ME IN CONTACT WITH ZAU. ZAU ADVISED ME THAT I HAD PENETRATED A TFR IN THE CHICAGO AREA; FURTHER STATING THAT THE TFR HAD BEEN EXTENDED OUT TO A 30 MI RADIUS AND THAT I WAS TRACKED AT 26 MI; 4 MI INSIDE THE TFR. I IMMEDIATELY REVIEWED THE COMPUTERIZED BRIEFING THAT HAD BEEN OBTAINED AT BENTON HARBOR. NOWHERE ON THIS 7 FT PRINTOUT IS THERE ANY MENTION OF A TFR. IF I HAVE MADE A TRANSGRESSION; IT WAS TOTALLY AND COMPLETELY INADVERTENT AND MY DECISIONS AND ROUTING WERE BASED SOLELY AND ENTIRELY ON ALL OF THE INFO THAT I COULD OBTAIN.