Need simple python perl or bash script ASAP !!

I have folder containing many small files... I need a script that will for every file run the following commands: 1. text is in such format: okreœlenie;; tej;; wiêkszoœci;; podwójn¹;; wiêkszoœci¹;; g³osów;; i;; stosowanie;; podwójnej;; wiêkszoœci;; w;; odniesieniu;; do;; wszystkich;; rozstrzygniêæ;; zgromadzenia;; .;; proponuje;; siê;; aby;; zarz¹d;; zwi¹zku;; metropolitalnego;; liczy³;; piêciu;; cz³onków;; zamiast;; trzech;; aby;; unikn¹æ;; sytuacji;; patowej;; .;; I need to have one sentence per line so remove ;; and put new line only when we see .;; and save each file to <old_file_name>.1spl 2. Then we convert it from WINDOWS-1250 to UTF and save as <old_file_name>.[login to view URL] 3. do on each file command: /home/nlp/opt/moses/bin/moses -f /home/nlp/Downloads/SMT_NORM/TAGG/model/moses.ini.1 < <old_file_name>.[login to view URL] > <old_file_name>.[login to view URL] I need it asap