Dreaded Clutch Problem

[leebo]

:ffs: I realy could use some help here. ive owned a 87 corolla gti (tvis) for 5 years after saving it from a old mans garage. the engines sweet, just the bit of rust round the rear arch's but now all sorted, never had to fork out for much more then a clutch,brake pads etc its done 67k owned by 1 person so its very tidy inside. but 2 days ago while going to the shops a real strange noise came from under the bonnet when i press the clutch in. goes in and out of gear no probs. But the noise only happens when the clutch is pressed . ive had a look and cant quite work out if its the clutch release bearing! any ideas? can you buy just the release bearing or am i gona have to fork out for the whole clutch assem...