This has to be one fo the most enjoyable games i've ever played, the gameplay is fantastic. I lost the original disks so got this one (exactlly the same game as far as i can tell & includes patch. Only difference is the pictures on the CDs & the autorun menu. Same install menu though). Its one of those games you can end up playing all day and forget you haven't eatten, and that it's now early morning and you need to get up soon - but it doesn't matter because you've got Red Alert 2! Ok maybe a bit OTT but it happens! It's great! It's the Half Life of RTS games.
If you're worried about the resolution if you've got a monitor bigger than 1024x768 or a widescreen monitor like me don't worry, you can run in any res you like. See here for the fairly simple instructions : http://www.widescreengamingforum.com/forum/viewtopic.php?t=4078
Just buy it - what possible reason do you have not to! Especially for only £5 - thats 2 drinks or a cinema ticket.
Enjoy!