Windows 7: Windows 7 Home Prem has a ICON NOT DELETING issue

Hi Everyone Im New so please bare with me,
I have a DELL DIMENSION e521 and I upgraded from XP but instead of letting it format over XP, I put Windows 7 on a new Partition, on the same drive as XP just XP is C: and 7 is O:



Anyways im having issues with icons

I switched my theme tonight, got tired of my wallpaper and all of that now I have this thing where whatever is on my desktop say I make a file called ABC.PNG ok I will drag ABC.PNG to trash and instead of it dissapearing its still there. Then I right click and refresh and its gone I dont understand... The pc has only been turned on for 1 day and a couple hours and I just installed 7, two weeks ago.

Any Solutions?

Thanks
Christopher

Life, According To Christopher