Changed my mind - I WANT IE to remember my password

According to Google, this can only be done by changing settings in the registry, check the step by step guide here : How To Force Internet Explorer To Save Web Site Password After Answering No

"You can force Internet Explorer to re-prompt to save your credentials by doing the following:

Highlight your username once it shows up in the auto complete list and press Delete key on the keyboard.  This erases that ""log"".

Note: If your username doesn't appear in the auto-complete list, try enabling saving of form entries in Internet Options > Content tab > AutoComplete Settings > enable ""Forms"" checkbox. Then log in to website one time to create an auto-complete entry...then delete it per step #1.
Input your username again and IE will treat it as a new log and thus ask you again if you want IE to remember your password.

Note: You must delete the username while it is still in the drop down list."