Would you like to make those to XHTML?
Important is to don't make button with text as images, because I'll have text in few languages so it needs to be clear button as image and clear text in text.
homepay_aktualnosci - in the top there is a place to login with login and password, then "zaloguj" means "login" and "przypomnij hasło" is "forgot password". "Dzisiaj jest [login to view URL]" is a date.
homepay_platnosci - make them choose nice with javascript when mouseOnObject and objectSelected. "Object" is the box with image.
homepay-rejestracja - make them like above when mouseOnObject and when objectSelected.
homepay_v1-v5 - make them slide nice.
homepay_zaloguj - the red box with 24-515 is .css error. The text "W pliku .txt znajdują się kody nieaktywne i nie użyte, po jednym w każdej linii." should be a .css info. The table with "DEMMOO" is a <table> css + <td>, <th> and <tr>. homepay_zaloguj is a panel, in the top you don't have a place to login anymore, but information about who is logged in, you see?
Don't forget about shadows in all boxes - it's important, because some content is short and some is long so shadows in all boxes should move together with text.
Are you ready to take this job?