As you know, to download a file from 
Narod.disk , you must either enter the captcha, or install Yandex. Bar. And if you don’t want Yandex.bar to callus eyes (or your favorite browser is opera)? Yes, it can be hidden, but why is it needed then, if it is used only for downloading files from Narod. Disk?
And you can do without it, while downloading files without captcha in any convenient browser that allows you to change the user agent.
Firefox MethodWe type in the address bar 
about:config , in the Filter field we write:
general.useragent.extra.firefoxAnd we add to the value of the appeared parameter 
YB/3.5.1 (for me, for example, the result is "Firefox / 3.0.1 YB / 3.5.1"). Everything, now Disk thinks that we have installed Yandex. Bar
Opera wayIn the Opera folder we find the opera6.ini file, open and look for the ISP section (if not, then create it). Find \ create in this section the parameter ID with the value 
YB/3.5.1 . You should have something similar:
[ISP]
ID=YB/3.5.1We restart the opera and, if everything is done correctly, Yandex will be happy to inform you that we have the latest version of the bar installed
Method for other browsersWe find how to change the user-agent of the desired browser, and append either the 
YB/3.5.1 string to the end, or to the inside of the user-agent, just to 
avoid this:
My-browser/20.0 (YB/3.5.1) someone infoThe Yandex. Bar identifier should not be surrounded by brackets (tested empirically). As a last resort, you can add some nonsense to it after the semicolon (";").
Examples of correct user agents:
Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1 (ddd; YB/3.5.1; eee) eiireo werw 4242 FirePHP/0.1.1.1
Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1 FirePHP/0.1.1.1 YB/3.5.1If the described actions are true, then now you can download from the Disc without entering the code and without installing the Yandex bar. (Which, for example, in the opera is impossible for now)