stp please help for tax issues

请教几个税的问题：

1： 1040 65line ：怎么填 2005 estimated tax payment and amount applied from 2004 return
IS estimated tax payment means I paid for real estate and personal prosperty?

2：我妈妈符合IRS dependent 的规定，可算作我的dependent，可为什么在1040上没找到any credit for dependent，只在6c上填了信息和6d上的number of exemptions claimed 为2. i can find chid credit.