Help I followed securityexperts advice and now my computer is really trashed!?

Im not sure I understand what you want. You deleted a program, paid for something else and your internet browser no longer works? You needed to post the location of the original question that way "we" get a better understanding of the problem. IE7 or Firefox, XP or Vista?

For Internet Explorer go to Control Panel, open Internet Options, in the big white box type the name of the home page you want to open. for example www.yahoo.co.uk. Click apply bottom right and it should save it, delete anything else in the box.

For Firefox, start Firefox, open Tools, go to Options, on the Main Tab you can set the home page, again delete anything else in the box.

Why half a screen? do you mean your browser page is half of the screen size or your screen image is only half the size of the screen? to expand the page view click on the square box top right between the - and x.

If you get the full image but only in half a screen in the monitor size then right click in a blank space on the desktop, select Properties (Personalization in Vista) and change the screen resolution size to 1024x768 or if a wide-screen 1280x800 and see if that makes a difference.

What bothers me the most is the registry changes and you paid for it? What did you pay for? Particularly what was it called if it was a program or did you pay someone to do the work?

If you paid someone to do the work take it back, it is not fixed.

If you bought some software I do hope it was not a "spyware" removal program purchased from a pop up on your PC and paid for with a credit card. If it was a pop up asking for payment for a removal program then this is a scam. You need to immediately inform your Bank, check the payment as they often charge you twice and will do so again. Stop the payment, it is a fraudulent transaction and instruct the Bank to deny any future payments from this company.

I would suggest you need to run a full system scan for Virus, spy-ware and root-kit infections, you do have anti virus protection don't you? If not what are you doing? surfing without protection these days is almost suicidal. Try this http://www.avg.com/download-trial, this is a fully functional 30 day trial that will scan for all of the above (the free version does not)

C is the respond!!! Collar that lady up and gag her with.. (nope.. unlikely to do it.. have not gotten a contravention in each and every week..) Aww.. hell. helpful i'm.. Stuff that seize with a Sausage!