So my 1.9tdi started making a squeaking noise then a burning smell I stopped for a look and ,,,, I think the alternator has gone ha 

My brother is getting me an alternator hopefully tomorrow 

Any one know the part code for the belt I think I will need a new one i dont think the heat will of done old one any good 

Item 4 or 18 here depending on A/C absence/presence https://skoda.7zap.com/en/cz/fabia/fab/2003-225/9/903-903055/#18

18 as it has ac shes posh ha 

Is it hard to change? ( can I do it my self ?) 

The belt, the alternator or both?

Both 

Belt should be here this evening so going to have a go at fitting it my bro dropped me a nr new alternator off last night 

40 minutes! Was easier than I thort 

^ Nice work