In reply to mhart: Yep, it's a long walk along Glen Nevis, quite boggy in places. A more interesting approach is from Kinlochleven, past the high lochans and up to the bealach between it and Binnein Mor. You could then scramble up the northeast ridge of Binnein Mor to the summit - grade 1 in snow and very enjoyable.
If you do go in from Glen Nevis, avoid it on Monday and Tuesday this coming week as the gorge path is closed for repairs.