Wanted Samsung galaxy s2 or similar, will swap for my Acer Aspire pc set up ?

Hi Im looking for a samung galaxy s2 or similar which I m willing to swap my Acer Aspire pc with lcd Monitor (all in excl condition and excl working order Pc specs are :- Pentium 3.6 Ghz processor 2 GB ddr2 Ram Windows vista 580 GB Sata harddrive (1 X 80GB & 1 x 500GB ) New (still have box) Ati Radeon 1gb (DDR3) 3d Hd graphics card with D-sub/Hdmi and Dvi output 6.1 sound sound internal sound Dvd rom drive LIGHTSCRIBE dvd rw drive Brand new 400watt gold psu multi memory card reader Wifi wireless card (unfitted) Keyboard Mouse Lcd monitor with built in speakers thxs