You have several dialers there. Close all (browser) windows & rescan with hijackthis. When the scan is finished place a check in the box to the left of the following entries & click 'fix checked' :
O16 - DPF: {5F426A93-0821-47D2-A126-5A48A874B289} (DialerWeb Class) - http://212.145.159.194/251065/dialercab/WebRecomendada.cab
O16 - DPF: {73F0FD85-BD47-4A95-86D1-DE38860462C1} (PremiumHTML Class) - http://www.accesoplugin.com/dialercab/IberoDialerHTML.cab
O16 - DPF: {7EB15626-CB8E-4174-8A72-C055B12B4310} (CQD2Loader Object) - http://smartdownloader.com/installer.dll
O16 - DPF: {8A0DCBDA-6E20-489C-9041-C1E8A0352E75} - http://download.getmirar.com/875455/files/installer.cab
O16 - DPF: {AD7FAFB0-16D6-40C3-AF27-585D6E6453FD} - http://217.73.66.1/del/loader.cab
O16 - DPF: {DB893839-10F0-4AF9-92FA-B23528F530AF} - http://deposito.hostance.net/dialer/607180.exe
O16 - DPF: {E0CE16CB-741C-4B24-8D04-A817856E07F4} - http://cabs.roings.com/cabs/chedownzip.cab
O16 - DPF: {F0230524-9D39-4E84-8452-41C592961EA7} - http://www.4wav.com/Config.cab
Download & install spywareblaster from www.javacoolsoftware.com to prevent the installation of there entries.