Domain hosting

[#1]

Am I right in thinking that if I follow the instuctions here http://www.plus.net/support/domains_and_dns/hosting/domainin.shtml I can host a domain with Plusnet but still have the original company i registererd it with handle the registration, renewal and billing? I can host up to 5 domains free on my Plusnet account and am only hosting one there currently (the one you can take out for an extra £1 per month with Plusnet). Just wanted to check.
Thanks

[#2]

Yes info http://www.plus.net/support/domains_and_dns/hosting/domainin.shtml don't use the automated system but go here to ask support that you want PN to host only.

[#3]

Yes, make it clear you want PN to host the domain only, not have it transferred to them.
It depends on what product you're on .. have a look at http://www.plus.net/support/domains_and_dns/hosting/hosting_allowances.shtml
Worse than I thought, since the refresh, we've lost monthly contracts, hosting and any hosting allowances.
Personally I'd consider getting cheap hosting elsewhere.
EDIT: Just re-read the OP saying they had 5 on their account. So it should be fine.