The only wordprocessing programs that donot add in uneccessary formatting and style code is a "plain text editor" like NotePad. Both WORD and WORDPERFECT add stuff that the wordpress program has to strip out.
If you don't care for NotePad then you can
(1) turn off the text rich editor -> dashboard -> profile -> uncheck the visual rich editor box
(2) you can download BlogDesk free from the net and use it (it's very easy to use) and it will upload your posts into your blog with the formatting you choose. It provides the neccesary html after you input just the text without the coding.
(3) If you sidebar is dropping to the bottom of the page it's usually because you have an oversized image in your blog. If you reduce the image size it will correct. I just looked at your sidebar. It's fine from what I can see.