Help me to remove iframe

Hi all,

i have around 50 websites – all with wordpress in IX hosting account. Recently all were affected by iframe virus.

I am trying very hard to remove this but I cant.

There is somefile.htm (with encrypted script) and a zcv.gif file. And iframes in all login and index file.

These doesnt affects suddenly. Some sites working. Some sites doesnt works suddenly. When I hit enter, i see the following status in firefox status bar – requesting to aachristmas.com.

I removed iframe in some files. The next day, it comes once again but like <?php echo”<iframe …”. I removed once again.
The next day it comes like <script = …..>

Please help me all my websites are going down.

thanks in advance.