You can find the Developer Reference for Excel 2007 on MSDN along with the (somewhat unruly) API Reference
To answer your question directly, I've created a demo that includes row deletion.
Working Demo
(Requires IE, Excel and ActiveX privileges)
http://jsbin.com/izule (editable via http://jsbin.com/izule)
JavaScript Source
function test() {
if (!window['ActiveXObject']) {
log('Error: ActiveX not supported');
return;
}
try {
var
ExcelApp = new ActiveXObject("Excel.Application"),
ExcelBook = ExcelApp.Workbooks.Add();
ExcelBook.Application.Visible = true;
log('Opened Excel');
wait(2, enterData);
}
catch (ex) {
log('An error occured while attempting to open Excel');
console.log(ex);
}
function enterData() {
try {
ExcelBook.ActiveSheet.Cells(1, 1).Value = 'foo';
ExcelBook.ActiveSheet.Cells(2, 1).Value = 'bar';
log('Entered data');
}
catch (ex) {
log('An error occured while attempting to enter data');
console.log(ex);
}
wait(2, deleteRow);
}
function deleteRow () {
try {
ExcelBook.ActiveSheet.Rows(1).Delete();
log('Deleted first row');
}
catch (ex) {
log('An error occured while attempting to delete a row');
console.log(ex);
}
wait(2, quitExcel);
}
function quitExcel () {
try {
// Allow excel to quit without prompting user to save.
ExcelBook.Saved = true;
ExcelBook.Application.Quit();
log('Quit excel');
}
catch (ex) {
log('An error occured while attempting to quit excel');
console.log(ex);
}
}
}
function wait (time, action) {
setTimeout(action, time * 1000);
}
function log (message) {
var
list = document.getElementById('log'),
newLog = document.createElement('li');
newLog.innerHTML = message;
list.appendChild(newLog);
}
if (!window['console'] || !window.console['log']) { console = {log: log}; }