Hi absic,
Sorry about the confusion, I tried using both. With the DVI cable I got full screen, with the HDMI I got a one inch border around it.
However, you might be interested in how I sorted out the problem.
It is all due to ATI, who manufacture the graphics cards. If you use a HDMI cable with a ATI graphics card, ATI assumes you will be connecting up to a TV screen. TV's have a lot of overscan, so ATI reduce this to 85%. When it therfore connects to a TV there is no overscan and you see full screen pictures.
Now, connect that HDMI cable to a pc monitor and what do you get? You get 85% screen, which equates to about a one inch border arond the displayed desktop. To get over this problem you need to instal ATI Catalyst. I would suggest you download it from the ATI/AMD website as the copy you get from the maker of the card is restricted on what options are made available, from ATI you get everything. Using Catalyst, you highlight the monitor and select "configure". Move the overscan slider to 0 and the screen then goes to 100%.
If you want, I can put the full procedure down for you, step by step.
Regards,
David