i have a sphynx cat, Connie and you really need to do your reading on them (if you've not done so already)! Desley is right to extent about the bathing but it really comes down to the cat and its skin. i dont use baby wipes on connie as they make her skin go red and seem to irritate her and it got to extent that she'd run off when she heard the baby wipe packet. for connie it's a bath every week with johnson's baby wash, it's essential you dont use anything scented on their skin. i use a flannel to clean her and before putting her in the bath, i put ear drops in her ears so they can work whilst she's in there. i usually have to wash her twice cos of the dirt. then i clean her ears with cotton wool, i do this a further 2-3 times a week.
sphynxs eyes are natually dirty because they dont have eyelashes to protect them, i clean connie's daily.
sphynxs skin can feel quite oily at times and thats because of the lack of fur to absorb it. this is turn leads to digestive problems from all the oil/grease they ingest. to get clear it up i use prokalin from the vets and sensitivity control food.
Sphynxs can be pretty non stop and when i got connie i wasnt expecting this overactive cat who is quite happy to sit and meow to herself for an hour. but she is very affectionate and craves human and feline attention. her favourite thing to do is get in the bed and then lick my arms.
also with regards to heat, this time of the year its not so bad cos the weather is ok but in the winter you'll need to get some big fleecy blanket she can get completely under. if you consider a cat's body temp is higher than ours then sphynxs feel the cold even more. connie also has a heat pad. but sometimes in the winter she just refuses point blank to get out of bed all day
just do lots of reading online, im part of a sphynx group on livejournal and on yahoo groups too where you can get lots of advice etc.
connie and her pal Jap and between them is connie's toy mouse which she plays fetch with, she'll even carry her mouse around meowing with it in her mouth until she find her and play with her