The problem with PC world is that 90% of the staff have no background in IT and as such have to follow written instructions (and we all know how often they work out dont we).
I know 3 people who work for PC world and every single one of them asks me for help because they are computer novices, infact 2 of them only have PC's because of staff discount apparently.
Strzelecki seems to be the exception to the rule, you can always tell when someone like him has dealt with your machine as it normally works when you get it back
I also agree with whats been said about store locations, the store near me is terrible, not one staff member who seems to know how to use a PC properly. There are three groups of staff at this store...... The know nothings, The know nearly nothings and the infamous "I play games on my PC so how hard can the rest of it be"
Now if your willing to make the 30 minute drive to Aintree from my house thier store is fantastic, or at least it was last time I went there (about 3 years ago). There is still the fair share of know nothings etc but I would have said that half of thier techs actually know what they are doing.