how to change paint default save as type in XP/win 7

Not all admit it but many use paint at some moments(at least I do) use paint for basic picture editing/composing.
so what happens as soon as we hit the save button on a new paint file?
it saves the picture as .bmp that is a bitmap file. so here is a work around to save them as jpeg
In win 7

a) Open PAINT, then click the BLUE drop down box in the top left hand corner of the screen (this is the box that gives the drop down options for saving a file).

b) Now click “Save as” and a selection of save as formats including JPEG will appear to the right. Move your cursor over the JPEG option and right click the option.

c)  Three options will be presented, click (select) the top option which says “Add to Quick Access Toolbar”.

This creates a new ICON at the top of the paint screen next to the DO and UNDO arrows (icons). Now in future when you want to save anything as JPEG simply click this new icon (rather than the blue drop down box) and the normal save screen will open with JPEG as the DEFAULT.

In Xp

• Make a small blank white JPEG image and save it to a place like C:\blank.JPG and make it read only
• right-click the paint shortcut in the start menu, and select “Properties”
• Append “C:\blank.JPG” to the end of the Target field (keep the quotes)

Now clicking the paint icon would open the blank jpeg file and you have to just save your pictures with new file names.
For a person who wants to preserve the file quality of the image after editing its necessary to save files in bitmap/TIFF as jpeg editing leads to image corruption.
But jpeg is good for uploading images  as it is a fraction of the size