When I hook up my wireless router to my ethernet cable and to my desktop,it slows it down to a crawl.[really slow],also with my laptop,which is a wireless connection is also slow,slow ,slow.

Re-post your question(s) and advise brand / type / model of your router, computer make and operating system you are using. One thing that will cause extremely 'slow' performance is inadequate memory. At the least, you should want to have 256 Mb of memory to support. Also, run a complete spyware / virus scan on your computer then defrag your hard drive. I will watch your repost and try to help more.