I've got a polo k reg 1.0, and i've done most stuff on it, including a clutch.
If you can give me more info about the cutting out problem i might be able to help.
The difficult bits doing a clutch, obviously getting the box in and out, interestingly on the polo it 'looks' like there is plenty of room, but it is still pretty tight.
Getting the starter motor off is a pain, as its at the back of the gearbox, also there is a rear engine/gearbox support bracket that can be difficult to remove, its much easier to remove this complete, and the downpipe support bracket needs to come off, remember how it goes together, as its in several bits!!
Before loosening the bolt and separating the gearshift coupling, make sure you mark it, as you won't get the gearchange back otherwise.
And obviously support the engine when you remove the gearbox mounting.
Anything else you need to know then let me know!