Hi shekala,

I'm a little unclear as to what you're looking for exactly, so here's a few notes.

First of all, the power of Smart Add is at your fingertips:

https://www.rememberthemilk.com/help/?ctx=basics.smartadd.howdoiuse

Let me address one thing as well - you can use '//' to add a note to a task via Smart Add, so enter // followed by your note.

Example:
Remind Bob to go shopping //Make sure he packs a banana for his trip

In terms of other ways to add tasks, there are quite a range of options including by email, integrations with Twitter and Evernote and many more.

Hope this helps - let me know if you need more specifics.

Tristan