I can make a blend in paint shop,but i've heard making a blend in photo shop is easier and that photo shop is better,but i've tried in photo shop and I find it hard to cut around the image.Where in paint shop pro it's easier,by just using the eraser.And i've just noticed that when I paste a new layer in psp on a black plain background the photo pastes as really small,when it was originally bigger ?!?!

It doesn't really matter -- you can make blends in either program just fine. Photoshop is more powerful though.

Photoshop is more for professionals. Try using another tool like the polygonal lasso tool [my fav] or even a simple marquee tool. Then in PS go to selection > inverse to select the background behind the image you are cutting out.
I'm using a different computer at the moment so if you need help It'll have to wait until saturday ^^;;

And i've just noticed that when I paste a new layer in psp on a black plain background the photo pastes as really small,when it was originally bigger ?!?!


You have to use the magnification tool to see it as its original size. When the file says it's at 100%, that means it is at the size it's supposed to be. There have been many threads asking whether PS or PSP is better already on this forum. Try doing a search ;) .