I have listed them with several major Euro engines, but they are a dot-com, and get only a dribble of traffic -- they get more from Japan and AU/NZ than from Europe.
I'm not sure that the client would be open to buying European domain names or developing Euro-specific content. Their product doesn't really work that way very easily.
Any suggestions on other ways to raise European awareness for an American site would be appreciated.
As AV, Excite et al maintain seperate DBs for their UK versions I'd ensure you submit to these if you haven't already, and also to country-specific SEs / local versions where the country has a high proportion of English speakers (Scandanavia, Netherlands, Germany mainly).
I have good listings in various 'other language' (such as French and Spanish) engines with an english .com, but have found the complications arising from having enquiries etc translated to be more effort than it's worth.
The main issue here is that the UK/European engines don't get the share of traffic the US engines get (yahoo excepted).
Surfers still go to altavista.com instead of av.co.uk (despite the pop-ups of recent weeks).
Some of the non-English engines, speedfind in Germany for example, do achieve better targeting - their audience is German, primarily. Also, you won't get into some (like speedfind) if you don't have German on your site.
Tedster, hope that helps.