How to delete a row in spreadsheet (Google Spreadsheets)

Hi everyone! I'm working with Googe Spreadsheets and now I want to automatically delete a row by HTTP request. I read som tutorial on internet but i do not know a way to get "rowId" and "rowVersion" to complete this URL: https://spreadsheets.google.com/feeds/list/key/worksheetId/private/full/rowId/rowVersion

Beside this way, I want to know a way to resolve a problem like this: Now i have a cell, i want to replace the cell's data after finish a response by google form or the others way, not save at a new cell, just replace!

Can everyone help me! I really thankful about this!