Spammers and junk post
 

I have serious problem on my forum. Spammers are posting junk post in 1000s.

For cleanup I have to do following steps

Find a spam post.
Click on poster name to View Profile eg. sz7141009
Click on "Find all posts by sz7141009"
Click on check box "Showing results 1 to 25 of 644", this will selects 25 appearing this this page.
Scroll down page at end.
Under - Moderation; select Delete Posts from drop down menu.
Click GO button.
Select Delete Post combo and hit delete button.
then
repeast above for each set of 25.

Then find next profile which is posting unwanted emails.

I want to display all post by a spammer and delete in one attempt. Is that possible?
Or at leaset display and select at least 100 on a page. At the moment is shows only 25.

Any help or suggestion ?.