[jfricker]

I don't think you want to "rent a sysadmin" (that sounds real low brow to me). Instead look for a contact sysadmin but first make a list of the tasks you want to hand off. If it's a logical grouping you may find that a managed host can take care of you (like SliceHost or DreamHost). If not, then use that as a job posting a la 'Seeking Linux Contractor' and screen carefully. Your best candidate will likely have a couple long term clients they take care of a little room for a new one.

[jfricker]

Also, plan on a long term relationship. "Rent" sounds like you'll toss the sysadmin away and when new work pops up you'll just fetch another one. Don't do that. Establish a relationship as you may grow into needing a lot of work done.

[lionheart]

Any tips on where to post that kind of a position?